1. Field of the Invention
This invention relates to a system and method of providing discounts to customers on the purchase of gasoline, and in particular to a system and method in which customers earn discounts when performing certain actions, such as making purchases, wherein the discounts are associated with customer identification information and may be redeemed by the customers when purchasing gasoline using the customer identification information.
2. Description of the Related Art
Many retailers, such as supermarkets, discount stores, warehouse stores or clubs, convenience stores and the like, have programs in which customers are provided with cards, sometimes referred to as frequent shopper cards or loyalty cards, which enable the customers to receive discounts on selected products or other awards if the card is presented (and typically scanned) at the time of purchase. Such cards typically have customer identifying information encoded thereon, such as in the form of an optically readable bar code or some other machine readable form, which link the customer and the card to a particular account and/or record associated with the customer. Many such retailers, in addition to offering their traditional products (e.g., food and household items), also sell gasoline. It would be advantageous for retailers that sell gasoline to be able to provide gasoline discounts to its customers when the customers purchase the retailer's non-gasoline related products and/or utilize or purchase the retailer's non-gasoline related services as an inducement for customers to do so.
One prior art system for providing discounts on the purchase of gasoline based on the purchasing activity of customers is described in U.S. Pat. No. 6,321,984 B1. The disclosed system includes a data processing system that creates and maintains records in a database for customers that make purchases at an associated store. The system tracks the customer purchases and compares them to certain predefined criteria to determine whether the customers are eligible to receive a discount on the purchase of gasoline. The predefined criteria may include the purchase of items from a specified group or the purchase of a specified dollar value threshold of items. When a customer meets one of the predefined criteria, the system authorizes a gasoline discount award and provides the customer with a mechanism for obtaining the discount. The mechanisms that are described include a paper receipt having bar code data that authorizes the discount (that is to be read at the gasoline pump), data authorizing the discount that is magnetically encoded onto a magnetic strip card (that is also to be read at the gasoline pump), and an authorization identification number (that is to be input by the customer, such as on a keypad, at the gasoline pump). The mechanism, in whatever form, notifies a controller located in the gasoline pump that a particular discount should be provided on that particular gasoline purchase. U.S. Pat. No. 6,332,128 describes a similar system in which a gasoline discounts may be encoded in a bar code on a printed receipt, encoded in a radio frequency identification (RFID) device, or magnetically encoded on a frequent shopper card or other magnetic medium such as a prepaid card or credit card. The problem with these systems is that the discount authorizing mechanism itself is provided on an item that is physically possessed/carried by the customer. As such, if lost or damaged, the discount is lost.
U.S. Pat. No. 6,332,128 also describes an embodiment wherein, when a customer makes a purchase that entitles him or her to a gasoline discount, a receipt is printed for the customer that includes, in bar coded form, customer identification and transaction identification information associated with the discount. At the same time, transaction data that includes customer identification information, transaction identification information and information relating to the discount issued during the transaction is stored in a database record. As such, the receipt provided to the customer is linked with the database record, and thus the discount value. When a customer desires to redeem the discount, the customer takes the receipt to the gas station where it is scanned by a bar code reader at the pump. The pump, through a controller with which it is associated, accesses the appropriate customer record from the database, and adjusts the price of the gasoline based on the discount contained in the record. The problem with this approach is that there is a 1:1:1 relationship between the discount earning transaction, the discount that is issued, and the paper receipt provided to the customer such that the customer receives a new receipt each time a discount is earned. The customer must then possess and keep track of multiple receipts in order to get the benefit of each issued discount. To get the benefit of the total of the discounts issued, the customer must scan several receipts, one for each transaction, at the pump. All of this is time consuming and inconvenient for the customer. In addition, keeping track of (and not losing) multiple receipts may be difficult for many customers.
Thus there is a need for a system for enabling customers to earn discounts on the purchase of gasoline when performing certain actions at a retailer location, such as making purchases, wherein the discounts may be redeemed by the customers when purchasing gasoline in which the discount authorizing mechanism itself is not provided on an item that is physically possessed/carried by the customer and in which the customer need not keep track of multiple items relating to a number of discounts earned. Such a system would avoid the problems encountered in the prior art, such as the loss of discounts due to lost or damaged discount authorizing mechanisms and the difficulty and inconvenience of redeeming and keeping track of multiple discount authorizing mechanisms.
The present invention, in one embodiment, relates to a method of providing a customer having customer identification information with a discount on the purchase of gasoline including determining accumulated discount information each time: (i) the customer performs one of one or more predefined actions, (ii) the customer identification information is received in association with the one of one or more predefined actions, and (iii) first information relating to the one of the one or more predefined actions is received. The accumulated discount information is based on the first information. The accumulated discount information is stored in a database in association with the customer identification information. The method further includes obtaining the customer identification information when the customer initiates the purchase of gasoline, accessing the stored accumulated discount information from the database using the customer identification information, providing the customer with an ability to elect a discount, if any, based on the accessed accumulated discount information, and providing the customer with an elected discount, if any, on the purchase of gasoline.
The present invention, in another embodiment, relates to a method of providing a customer with a discount on the purchase of gasoline wherein the customer has customer identification information associated with him or her that is used to track and redeem the discounts. The method includes determining accumulated discount information each time: (i) the customer performs one of one or more predefined actions, (ii) the customer identification information is received in association with the performed action, and (iii) first information relating to the performed action is received. The accumulated discount information is determined by converting the first information into a point value, and deriving the accumulated discount information from the point value. The accumulated discount information is stored in association with the customer identification information. The method further includes obtaining the customer identification information when the customer initiates the purchase of gasoline, obtaining the accumulated discount information using the customer identification information, and providing the customer with a discount on the purchase of gasoline based on the accumulated discount information.
In either embodiment, the per-unit price of the gasoline may be adjusted based on the accumulated discount information. Alternatively, a fixed discount amount may be deducted from the total gasoline purchase price on a particular occasion.
According to a preferred embodiment, the customer has or is provided with one or more customer identification elements which have the customer identification information associated therewith. For example, the customer identification element may be a customer card having customer identification information provided thereon in machine readable form, such as bar code form. In this embodiment, the customer allows the customer identification information to be obtained using the customer identification element, for example by reading a customer card, in association with the performed action. In addition, the customer identification information is obtained at the time of the gasoline purchase in this embodiment using the customer identification element.
When the method involves converting the first information into a point value and deriving the accumulated discount information from the point value, the method may also further include storing accumulated points information in association with the customer identification information, and determining new accumulated points information each time the first information is converted into a point value, wherein the new accumulated points information is a sum of the point value and the accumulated points information. Then, the step of deriving the accumulated discount information may include determining a first multiplier by determining the number of times the new accumulated points information is evenly divisible by a predetermined point amount, increasing the accumulated discount information by a first amount equal to the first multiplier multiplied by a predetermined discount amount, and setting the accumulated points information equal to a value obtained by decreasing the new accumulated points information by a second amount equal to the first multiplier multiplied by the predetermined point amount.
In another embodiment, the adjusting step includes determining an available discount amount that is the lesser of the per-unit price and the accumulated discount information, and reducing the per-unit price based on the available discount amount. In addition, the per-unit price may be reduced by the available discount amount. Alternatively, the per-unit price may be reduced by a fractional discount amount from said customer that is a fraction of the available discount amount. The method also preferably includes decreasing the accumulated discount information based on an amount by which the per-unit price was adjusted and storing the decreased accumulated discount information in association with the customer identification information.
The predefined actions performed by the customer to obtain a discount may include, without limitation, one or more of purchasing items from a retail location, purchasing a particular item at the retail location, completing a predetermined event at the retail location, and presenting a discount containing coupon at the retail location. In the case where the predefined action performed by the customer is purchasing a plurality of items from a retail location, the first information may be converted into a point value based on a one point for each dollar of the purchase amount basis. Alternatively, conversions may be based on predetermined fixed point values for each action.
The present invention, in another embodiment, also relates to a system for providing a customer having customer identification information with a discount on the purchase of gasoline. The customer identification information may be associated with one or more customer identification elements such as a customer card having the customer identification information provided thereon in machine readable form, such as bar code form. The system includes a main server and a customer database in electronic communication with the main server. The customer database stores accumulated discount information in association with the customer identification information, wherein the accumulated discount information is determined each time the customer performs one of one or more predefined actions and the customer identification information is obtained in association with the one of one or more predefined actions. The one of one or more predefined actions has first information related thereto, and the accumulated discount information, when determined, is based on the first information. The system also includes a computing device located at a gas station location that is in electronic communication with the main server. The computing device is adapted to access the accumulated discount information from the main server based on the customer identification information when the customer initiates the purchase of gasoline at the gas station location, provide the customer with an ability to elect a discount, if any, based on the accessed accumulated discount information, and provide the customer with an elected discount, if any, on the purchase of
The invention, in yet another embodiment, also relates to a system for providing a customer with a discount on the purchase of gasoline, wherein the customer has customer identification information associated with him or her that is used to track and redeem the discounts. The customer identification information may be associated with one or more customer identification elements such as a customer card having the customer identification information provided thereon in machine readable form, such as bar code form. The system includes a main server and a customer database in electronic communication with the main server. The customer database stores accumulated discount information in association with the customer identification information. The accumulated discount information is determined each time the customer performs one of one or more predefined actions, such as those described above, and the customer identification information is obtained in association with the performed predefined action. The performed predefined action has first information related thereto, and the accumulated discount information, when determined, is based on the first information by converting the first information into a point value and deriving the accumulated discount information from the point value. The system also includes a computing device located at a gas station location that is in electronic communication with the main server. The computing device is adapted to obtain the accumulated discount information from the main server based on the customer identification information and provide the customer with a discount on the purchase of gasoline based on the accumulated discount information.
In either embodiment, the system may include a point-of-sale terminal located at the retailer location for obtaining the customer identification information from one of the customer identification elements, such as by using a reader device. In addition, a gasoline pump at the gas station location may obtain the customer identification information from one of the customer identification elements, such as by using a reader device provided with the gasoline pump.
In addition, the customer database may store accumulated points information in association with the customer identification information, and the retailer computing device may be adapted to determine new accumulated points information each time the first information is converted into a point value. The accumulated discount information in this case is determined, for example by the main server, by: (i) determining a first multiplier by determining the number of times the new accumulated points information is evenly divisible by a predetermined point amount, and (ii) increasing the accumulated discount information by a first amount equal to the first multiplier multiplied by a predetermined discount amount. Also, the accumulated points information is set, for example by the main server, equal to a value obtained by decreasing the new accumulated points information by a second amount equal to the first multiplier multiplied by the predetermined point amount.
The computing device located at the gas station location may be further adapted to determine an available discount amount that is the lesser of the per-unit price and the accumulated discount information, and reduce the per-unit price based on the available discount amount. In particular, the per-unit price may be reduced by the available discount amount, or, alternatively, a fractional discount amount received from the customer. Finally, the point-of-sale terminal may be adapted to provide a discount report, such as on a printed receipt, to the customer that is based on the accumulated discount information.
In another embodiment, a method of providing a customer with a discount on the purchase of gasoline is provided, wherein the customer has customer identification information associated therewith. The method includes storing accumulated discount information for the customer in a customer database in association with the customer identification information, the accumulated discount information being a particular discount level for gasoline purchases, and storing accumulated points information for the customer in the customer database in association with the customer identification information, the accumulated points information being a first number of points and not being a particular discount level for gasoline purchases. The method further includes receiving the customer identification information in a retailer computer system in association with the customer performing at least one of one or more predefined actions, receiving first information relating to the at least one of one or more predefined actions in the retailer computer system, converting the first information into a point value in the retailer computer system, the point value being a second number of points and not being a particular discount level for gasoline purchases, receiving the accumulated points information in the retailer computer system, determining in the retailer computer system new accumulated points information based on the received accumulated points information and the point value, the new accumulated points information being a sum of the first number of points and the second number of points and not being a particular discount level for gasoline purchases, in response to determining the new accumulated points information, determining updated accumulated discount information comprising an updated particular discount level for gasoline purchases by calculating the updated particular discount level using the new accumulated points information and storing the updated accumulated discount information in the customer database in association with the customer identification information. Finally, the method includes obtaining the customer identification information when the customer initiates the purchase of gasoline at a gasoline pump, in response to obtaining the customer identification information, obtaining the updated accumulated discount information from the customer database using the customer identification information, and providing the customer with a discount, if any, on the purchase of gasoline at the gasoline pump based on the updated accumulated discount information. A system for implementing this method is also provided and includes a main server, a customer database in electronic communication with the main server, a retailer computing device in electronic communication with the main server, and a gas station computing device located at a gas station location and in electronic communication with the main server.
These and other advantages of the present invention will become readily apparent upon consideration of the following detailed description and attached drawings, wherein:
a and 3b are flowcharts of one embodiment of a method of redeeming discounts on the purchase of gasoline earned according to the method shown in
System 5 also includes main server 25, preferably located in a centralized location remote from retailer location 20. Main server 25 is a server computer provided with a software application that enables the retailer to implement a customer loyalty program wherein customers are assigned an account with associated customer identification information for identifying the customer (such as, for example, a unique ID number). Under the program, customers are able to earn rewards and discounts based on purchases or other activities. The software application also enables the retailer to collect important customer related data for use in, for example, marketing efforts. One suitable example of such a software application is the IBM Electronic Marketing Enterprise (EME) Solution. Preferably, although not necessarily, each customer has or is provided with a customer identification element that has the customer identification information for identifying the customer associated therewith, such as information provided thereon in machine readable form like bar code form. Main server 25 is in electronic communication with customer database 30, which stores data relating to the customers of the retailer that is collected by the main server 25, including the discount related information of the present invention that is described herein.
As seen in
Although only a single point-of-sale terminal 10 and a single retailer location 20 are shown in
Referring to
The method begins at step 100, where a customer visits retailer location 20 and performs a discount earning action. Discount earning actions may include, without limitation, purchasing items such as groceries (based on, for example, dollar amounts or number of units) from the retailer or an affiliated third party, purchasing particular products or brands from the retailer or an affiliated third party, joining a club or service offered by the retailer, bringing a new prescription to a pharmacy located at the retailer location 20, using a particular bank's debit or credit card for purchases, using the customer's customer card for the first time, presenting a coupon or similar item provided to the customer, such as a coupon indicating that a certain discount will be awarded if the coupon is presented with a purchase using a retailer or affiliated third party service, such as the photo lab, child care or pharmacy, for the first time or a fixed number of times, purchasing from a particular retailer department, such as the bakery or deli, visiting and/or purchasing products or services using the retailer's or affiliated third party's website or answering a retailer survey. In addition, before, during or after the discount earning action, the customer identification information is received by point-of-sale terminal 10. In the preferred embodiment, the customer identification information is read from the customer's customer card that includes a bar code that includes a unique customer identification number. Specifically, this bar code is read by a bar code reader provided as part of point-of-sale terminal 10.
Next, at step 105, certain information relating to the discount earning action, such as the dollar amount of the purchase, the particular item or brand purchased, the number of units of an item or items that are purchased, or the happening of one of the other events described above, and the customer identification information are sent from point-of-sale terminal 10 to retailer computer system 15. Then, at step 110, retailer computer system 15 requests certain information for the customer from main server 25 using the received customer identification information. Specifically, customer database 30 stores for each participating customer, e.g., those having a customer card, a record that includes accumulated points information and accumulated discount information, each of which are described in greater detail below. When requested, that information is retrieved by main server 25 from customer database 30 and is sent to retailer computer system 15 as shown in step 115.
According to the preferred embodiment of the present invention, each of the discount earning actions is converted into either a predetermined number of points or a predetermined discount amount, which points and/or discount amounts may then be used as described herein to determine particular discount levels earned by the customer. Thus, at step 120, retailer computer system 15 converts the event related information received from point-of-sale terminal 10 into either a predetermined point value or a particular predetermined discount amount. For example, it may be predetermined that one point is earned for each dollar spent by the customer on items at retailer location 20, or that a predetermined number of points, such as 20, are earned when a particular item or brand is purchased or when an action such as joining a club, providing a new prescription, or the like has taken place. Alternatively, it may be predetermined that any of these actions may correspond to a particular discount amount rather than a number of points, such as a 10 cent per gallon discount on gasoline. The conversion process may also be dynamic in that different discount levels may be awarded for actions depending on the status of the customer (e.g., customers that purchase in excess of a preset annual amount at the retailer may get larger discounts than other customers). Once the conversion is complete at step 120, retailer computer system 15 sends a point and discount update message to main server 25 as shown at step 125. Based on this message, main server 25 is able to update the accumulated points information and accumulated discount information that is stored in the record associated with the customer in customer database 30 to reflect the recent customer activity. It will be appreciated, however, that this preferred embodiment is only one embodiment of the present invention, and that other methods of determining discount levels based on customer actions may be used.
According to one particular embodiment of the present invention, a customer earns a predetermined discount amount each time a predetermined amount of points is accumulated by the customer as reflected in the accumulated points information stored in customer database 30. That predetermined discount amount, when earned, is added to the accumulated discount information stored in customer database 30. For example, a customer may earn a 10 cent per gallon discount on gasoline each time the number of points accumulated by the customer reaches 50. Once this threshold is reached, the accumulated points information value is returned to zero, and the accumulated discount information value is incremented by the predetermined discount amount (e.g., 10 cents). This particular embodiment may be implemented as follows (although, as will be appreciated, other implementations are possible). First, retailer computer system 15 adds the points earned as determined at step 120 to the accumulated points information value received in step 115 to establish a new accumulated points information value. Retailer computer system 15 then determines how much of the new accumulated points information value is “redeemable” for discount value by determining how many multiples of the predetermined amount of points described above (that must be accumulated to earn a discount) are present in the new accumulated points information value. In other words, a determination is made as to how many times the accumulated points threshold described above may be reached. For example, if the accumulated points information value received at step 115 is 5, and the earned points value as determined at step 120 is 120, and if the predetermined discount amount of 10 cents per gallon is earned every time 50 points is accumulated, retailer computer system 15 will determine that the new accumulated points information value is 125 with 100 points being redeemable. A message to that effect is sent to main server 5 at step 125.
At step 130, main server 5 updates the customer's record in customer database 30 based on the point and discount update message that is received. In particular, main server 5 updates the accumulated points information value and accumulated discount information value stored for that customer in customer database 30 based upon the point and discount update message it has received. In the particular implementation described above, main server 25 will subtract the number of redeemable points from the new accumulated points information value (both as determined by retailer computer system 15) and will store that value as the current accumulated points information value for the customer in customer database 30. Next, main server 25 will take the number of redeemable points and divide that value by the predetermined amount of points required for earning a discount to determine the number of “units” of the predetermined discount amount that the customer has earned. That discount amount is then added to the accumulated discount information value stored for the customer in customer database 30. For example, continuing with the example provided above, if a 10 cent per gallon discount is earned each time the customer accumulates 50 points, then main server 25 will add a 20 cents per gallon discount (100/50×10 cents/gallon) to the accumulated discount information value stored for the customer in customer database 30. Also, the main server 25 will subtract 100 (the redeemable points) from 125 (the new accumulated points information value), and store that value (25) as the current accumulated points information value for the customer.
In the preferred embodiment, the method proceeds to step 135, in which the retailer computer system 15 generates point and discount report information consisting of the currently stored accumulated points information and accumulated discount information values for the customer and sends that information to point-of-sale terminal 10. Next, at step 140, point-of-sale terminal 10 provides a point and discount report to the customer based on the point and discount information received from the retailer computer system 15. The report may be provided, for example, on a printed receipt provided to the customer. The report will preferably include a listing of the customer's current accumulated points information value and the customer's current accumulated discount information value for their reference. At this point, the transaction is complete and the customer may leave retailer location 20.
In another embodiment, customers may be able to access discount related information, such as the customer's current accumulated points information value and the customer's current accumulated discount information value, using a secure (e.g., password protected) internet connection. In this case, the relevant information will be obtained from customer database 30 and presented to the customer through an appropriate website.
In the preferred embodiment shown in
Referring to
As described above, the accumulated discount information will preferably be a particular total price per gallon discount that has been earned and accumulated by the customer. The discount information could also include fixed dollar amounts to be deducted from a particular purchase. At step 170, gas station computer system 35 determines the discount level that is available to the customer for use in the current transaction based on the accumulated discount information received from main server 25 and the gasoline price for the grade of gasoline chosen by the customer. In particular, in the preferred embodiment, the maximum discount level that will be available to a customer is the current price per gallon of the grade of gasoline chosen by the customer. In other words, the current price per gallon of gasoline is preferably, although not necessarily, the upper limit of the discount that is available, in which case the customer will be able to purchase a predetermined amount of gasoline at no charge. Thus, the available discount will preferably be the lesser of the price per gallon of the gasoline and the accumulated discount information value. If the accumulated discount information represents a price per gallon discount that is greater than the price per gallon of the gasoline chosen by the customer, the excess amount, in the preferred embodiment, will be saved by system 5 for future use by the customer.
Next, the available discount level determined in step 170 is, at step 175, sent to pump 40 and is displayed to the customer on a display provided on pump 40. At step 180, a determination is then made as to whether the customer wants to use the available discount on the current transaction. If the customer chooses not to use the available discount, such as by providing an indication to that effect on a keyboard or the like provided on pump 40, then, at step 185, the customer pumps the desired amount of gasoline at the current, non-discounted price. As seen at step 190, gas station computer system 35 then sends an update message to main server 25 which, in this case, will indicate that the customer has not used any of the accumulated discount information value. In response, of main server 25 will not make any changes to the customer's record stored in customer database 30.
If, however, the answer at step 180 is yes (the customer wants to use a discount), a determination is made at step 195, again using a display and a keyboard or the like provided on pump 40, as to whether the customer wants to use the full discount that is available, or, alternatively, some fraction of the full discount that is available. If the customer chooses to use the full discount, then, at step 195, the price of the grade of gasoline chosen by the customer is adjusted based upon the full discount amount, and the customer then pumps the desired amount of gasoline, preferably up to some predetermined volume limit amount (e.g., a maximum number of gallons), using pump 40. For example, if the price per gallon was $1.90 and the available discount was 50 cents per gallon, the price of the gasoline would be adjusted to $1.40 per gallon. If, however, the answer at step 195 is no, meaning that the customer only wishes to use a fraction of the available discount, the customer enters the desired discount amount using a keyboard or the like provided on pump 40 and, at step 205, the pump 40 adjusts the price per gallon of the gasoline based upon the selected discount level. The customer then pumps the desired amount of gasoline, again up to a predetermined volume limit in the preferred embodiment, using pump 40. For example, if the price per gallon of gasoline is $1.90, and the customer has an available discount of 50 cents per gallon, yet chooses to use only 20 cents per gallon, the price per gallon of the gasoline would be adjusted to $1.70.
Following either step 200 or 205, whichever is appropriate in the current situation, the gas station computer system 35 sends an update message to main server 25 indicating the amount of discount that has been used at step 210. In particular, gas station computer system 35 will send a message that indicates either that the full available discount amount has been used or, if appropriate, the particular fraction of the full available discount that has been used. Next, at step 215, the main server 25 updates the customer's record in customer database 30 to reflect that a discount has been used. In particular, the accumulated discount information value stored in customer database 30 for the customer will be decreased in an amount equal to the discount that was used by the customer in the particular transaction (either the full available discount as determined at step 125, or some fraction thereof specified by the customer). For example, if the accumulated discount value stored in customer database 30 prior to step 150 was 50 cents per gallon, and the customer chose to utilize a 20 cent per gallon discount, the available discount information value stored in customer database 30 would be decreased from 50 cents per gallon to 30 cents per gallon, meaning that a 30 cent discount would be available for the customer for use in future transactions.
Thus, the present invention provides a system and method for enabling customers to earn discounts on the purchase of gasoline when performing certain actions at a retailer location, such as making purchases, which avoids problems such as the loss of discounts due to lost or damaged discount authorizing mechanisms and the difficulty and inconvenience of redeeming and keeping track of multiple discount authorizing mechanisms. The present invention does so by storing discount related information at a central location and enabling the discounts to be redeemed by the customers when purchasing gasoline using the customer's customer identification information. As such, the discount authorizing mechanism itself is not provided on an item that is physically possessed/carried by the customer and the customer need not keep track of multiple items relating to multiple discounts that are earned. In addition, from a retailer perspective, the present invention allows retailers to better track and manage total discount amounts that are outstanding, enables retailers to provide better customer service as each customer's discount data is contained in a central location, and enables retailers to target market products based on the fuel related purchasing activities of customers.
While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of the invention which is to be given the full breadth of the claims appended and any and all equivalents thereof.
The present application is a continuation of co-pending U.S. Ser. No. 11/264,208, filed Nov. 1, 2005, which application is a divisional of U.S. Ser. No. 10/975,277, filed Oct. 28, 2004.
Number | Date | Country | |
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Parent | 10975277 | Oct 2004 | US |
Child | 11264208 | US |
Number | Date | Country | |
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Parent | 11264208 | Nov 2005 | US |
Child | 12569045 | US |