This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2016-175165 filed Sep. 8, 2016.
The present invention relates to a service providing system, a service provision instruction method, and a non-transitory computer readable medium.
There is a service providing system including a self-propelled apparatus that propels itself in a predetermined area and provides a service.
According to an aspect of the invention, there is provided a service providing system including a moving apparatus and a service provision instruction apparatus. The moving apparatus moves to a user who is within a service provision area within a predetermined zone, the predetermined zone including the service provision area and a service prohibition area, and provides a service to the user. The service provision instruction apparatus recognizes a position of a user within the zone and instructs the moving apparatus to provide a service to the user when the user is within the service provision area.
Exemplary embodiments of the present invention will be described in detail based on the following figures, wherein:
Hereinafter, exemplary embodiments of the present invention will be described.
The print system 100 includes self-propelled printers 20, each of which moves to a user in response to a print instruction provided by the user and performs print output after obtaining approval from the user.
The print system 100 includes plural laptop personal computers (hereinafter referred to as laptop PCs) 10A and plural mobile terminal apparatuses (hereinafter referred to as mobile terminals) 10B. Among these laptop PCs 10A and mobile terminals 10B, a laptop PC 10A and a mobile terminal 10B synchronized by the same user forms a pair to serve as a client apparatus 10. Although the details will be described below, in each client apparatus 10, a job related to print output is generated by a user who uses the client apparatus 10. The job is transmitted from the client apparatus 10 and thereby an instruction to perform printing is provided.
Here, the “job” is a set of data of a document or the like to be printed out and various types of instruction data that is necessary to print out the document or the like.
The print system 100 also includes, for example, three self-propelled printers 20. Each self-propelled printer 20 includes a camera 21. The self-propelled printer 20 moves to a user who has provided a print output instruction while watching ahead through the camera 21 to avoid obstacles and performs print output after completing user authentication.
The print system 100 also includes a server apparatus 30. The server apparatus 30 temporarily stores a job received from each client apparatus 10 and transmits the job to one of the self-propelled printers 20 at appropriate timing so as to instruct the self-propelled printer 20 to perform print output. In the server apparatus 30, a print instruction program, which is an example of a service provision instruction program according to an exemplary embodiment of the present invention, is executed. Accordingly, the server apparatus 30 operates as a print instruction apparatus, which is an example of a service provision instruction apparatus according to an exemplary embodiment of the present invention.
The job transmitted by the server apparatus 30 includes information specifying a user who has provided a print output instruction and information indicating a current position of the user. In response to receipt of the instruction, the self-propelled printer 20 moves to the current position of the user and performs print output after completing user authentication.
The client apparatuses 10, the self-propelled printers 20, and the server apparatus 30 illustrated in
The office 60 includes three floors: a first floor 60A, a second floor 60B, and a third floor 60C, which are located on the first, second, and third floors of an office building, respectively.
Plural tables 61 and plural chairs 62 are placed on each of the floors 60A to 60C of the office 60. Also, one self-propelled printer 20 is provided on each of the floors 60A to 60C of the office 60. For the self-propelled printer 20 provided on each of the floors 60A to 60C, a “standby position” is specified. For example, the standby position of the self-propelled printer 20 provided on the first floor 60A is the position of the self-propelled printer 20 illustrated in
Also, the first floor 60A of the office 60 is provided with, in addition to the tables 61 and the chairs 62 as office equipment used by individual users, a restroom, a coffee break area provided with a vending machine, a meeting room 1, a meeting room 2, and a meeting area. Although not illustrated, various areas are also provided on the second floor 60B and the third floor 60C, as on the first floor 60A.
Furthermore, in the office 60, beacons 40 are installed throughout the walls and ceilings of all the floors 60A to 60C. Each beacon 40 is a device that emits radio waves including ID information identifying the beacon. These beacons 40 are used to recognize the positions of users. The details will be described below.
In
Information about individual users who have a right to use the print system 100 is registered in the server apparatus 30. The registered information includes the IDs of the mobile terminals 10B of the individual users.
Upon a user entering the office 60, communication between the mobile terminal 10B carried by the user and the server apparatus 30 through the wireless LAN 101 becomes possible, and the mobile terminal 10B communicates with the server apparatus 30 basically at a regular interval, for example, at an interval of 100 ms. The server apparatus 30 obtains the ID of the mobile terminal 10B through the communication and recognizes that a specific user has entered the office 60. In the office 60, the seats of individual users are not fixed. A user who has entered the office 60 sits on any one of the chairs 62 of unoccupied seats and carries out his/her work.
Upon the user leaving the office 60, the communication between the mobile terminal 10B and the server apparatus 30 ceases and the server apparatus 30 recognizes that the user has left. Note that the leave herein includes a case where the user completely leaves the office 60, for example, the user goes home, and also includes a case where the user temporarily leaves the office 60, for example, the user is moving from the first floor 60A to the second floor 60B. The restroom, the meeting rooms, and so forth illustrated in
The server apparatus 30 includes a database storing the layout of everywhere in the office 60, including the positions of the individual areas such as the restroom, the coffee break area provided with a vending machine, the meeting rooms 1 and 2, and the meeting area; the entrance to the office 60; the entrances to the individual meeting rooms; and the beacons 40 on the first floor 60A. The same applies to the second floor 60B and the third floor 60C.
A user always carries his/her mobile terminal 10B when he/she moves in the office 60. The mobile terminal 10B carried by the user receives radio waves that are emitted by the plural beacons 40 and that include pieces of ID information of the individual beacons 40, associates the pieces of ID information of the individual beacons 40 with the reception intensities of the radio waves emitted by the individual beacons 40, and transmits the associated information together with the ID information of the mobile terminal 10B to the server apparatus 30. Accordingly, the server apparatus 30 is able to know the position of the mobile terminal 10B, that is, the position of the user in the office 60. When plural mobile terminals 10B exist in the office 60 at the same time, the server apparatus 30 is able to specify the positions of the individual mobile terminals 10B (the individual users) by using the pieces of ID information of the mobile terminals 10B.
Here, a description has been given of an example in which the positions of individual users are recognized by using the beacons 40. However, it is sufficient that facilities for recognizing the positions of the users in the office 60 are provided, and the method for recognizing the positions of the users is not limited to that using the beacons 40.
In the print system 100, a service prohibition area where a print output service is prohibited even within the office 60 may be set for each user, for each user group, or for each job. Hereinafter, a description will be given of a method for setting a service prohibition area and a method for providing a print service using information about the service prohibition area that has been set.
The users who have the right to use the print system 100 are provided with an application program (hereinafter referred to as an application) for using the print system 100, and the application is executed by each client apparatus 10. The service prohibition area setting screen illustrated in
On the service prohibition area setting screen, a service prohibition area where a print output service is prohibited is set for each user. The names of areas that are settable as a service prohibition area, such as “restroom” and “meeting room 1”, are arranged on this screen.
For example, in the example illustrated in
In this case, “restroom”, “meeting room 1”, and “meeting room 2” on the first floor, and the entire area of the third floor are set as a service prohibition area. Also, a setting is performed so that the position of the user is not checked for 10 minutes if it is determined that the user is in the restroom and that the position of the user is not checked for 60 minutes if it is determined that the user is in the meeting room 1 or the meeting room 2. This is because it is useless to continue the detection of the position of the user when the user is in the restroom or meeting room. After 10 minutes have elapsed from when it is determined that the user in in the restroom, check of the position is restarted. The same applies to the meeting room 1 and the meeting room 2 except that the time period until restart of check is different. Hereinafter, this time period is referred to as a “position detection prohibition period”.
In the example illustrated in
The setting on the service prohibition area setting screen illustrated in
The users of the print system 100 are grouped into plural groups according to the intended use of the print system 100. The manager of the print system 100 is able to, for example, permit the users belonging to a user group 1 to use a service on the first floor 60A and the second floor 60B and prohibit the users belonging to the user group 1 from using a service on the third floor 60C.
In the illustration in
The service prohibition area setting screen for a manager illustrated in
The setting on the service prohibition area setting screen for a manager illustrated in
When a user is in a service prohibition area or when congestion of print instructions occurs, for example, there is a possibility that print output is not performed even if the user transmits a job to provide a print output instruction. That is, when the server apparatus 30 receives a print output instruction by receiving a job, the server apparatus 30 stores the job in the server apparatus 30 and provides a print output instruction to the corresponding self-propelled printer 20 at appropriate timing. However, there is a possibility that time elapses without the appropriate timing coming. In this case, the server apparatus 30 does not hold the job forever, but discards the job after holding the job for the time period set on the job hold period setting screen illustrated in
On the job hold period setting screen illustrated in
In each client apparatus 10, if a user creates a document or the like, the document is registered as a job in the client apparatus 10 prior to print output. In the client apparatus 10, a screen showing a list of registered jobs may be displayed as illustrated in
If a user selects a specific job on the job list screen illustrated in
On the menu screen illustrated in
Here, “time” and “place” are set.
In the field “time”, the time to perform print output is set. In this field, a certain time from the current time to the end of the service provision hours of the day is set in units of minutes. If “print” illustrated in
In the field “place”, “prohibited” or “permitted” is selectable for each area that is settable as a service prohibition area. This setting is valid only in the present job. For example, it is assumed that a user sets “meeting room 1” as a service prohibition area on the service prohibition area setting screen for the user as illustrated in
However, there are items that are not settable on the print setting screen illustrated in
In response to receipt of a job transmitted from the client apparatus 10, the server apparatus 30 checks the current time and determines whether or not the current time is within the service provision hours (step S101). If the current time is out of the service provision hours, the server apparatus 30 notifies the client apparatus 10 that has transmitted the job that the current time is out of the service provision hours (step S102) and ends the job reception process.
Here, a message “out of service provision hours” is displayed.
Referring back to
If it is determined in step S101 that the current time is within the service provision hours, the server apparatus 30 stores the job transmitted this time in the server apparatus 30 (step S103). Subsequently, the server apparatus 30 recognizes a service prohibition area and obtains a position detection prohibition period (step S104 and step S105). In step S104, a service prohibition area for the present job is recognized with reference to information about a service prohibition area that is set for the user who uses the client apparatus 10 that has transmitted the present job (see
Subsequently, the server apparatus 30 checks the time when the print output service is to be provided (see
Upon the monitoring process routine being started, the server apparatus 30 checks the position of the user of the present job (step S121). In this exemplary embodiment, the position is checked by using the beacons 40 (see
If it is determined in step S122 that the user is in the service prohibition area, since the area in the service prohibition area where the user exists is recognized at this stage, the server apparatus 30 determines whether or not a position detection prohibition period is set in the area where the user exists (step S125). If the user is in the service prohibition area where the position detection prohibition period is set, the server apparatus 30 waits for the position detection prohibition period (step S126) and then repeats check of the position (step S127) until the user comes back to the service provision area (step S128). If the user is in the service prohibition area where the position detection prohibition period is not set (for example, the third floor illustrated in
If it is determined in step S122 that the user is in the service provision area or if it is determined in step S128 that the use has come back to the service provision area, the server apparatus 30 repeats check of the position of the user at an interval of, for example, 10 seconds (step S129). If it is determined that the user has been staying at the same position for a predetermined period, for example, for one minute (step S130), the server apparatus 30 starts a print output instruction process routine (described below) using the position information on the user (step S131).
Here, check of the position in step S123 or step S127 is performed at a long interval, for example, once a minute. Thus, the determination that the user has come back to the service provision area is performed with a delay corresponding to the interval. For example, if the position is checked once a minute, the determination that the user has come back to the service provision area is performed with a delay of one minute at the maximum. However, such a delay is negligible because it takes the time nearly corresponding to the maximum delay for the user to go back to his/her seat.
The print output instruction process routine is a routine that is started in step S131 of the monitoring process routine illustrated in
First, the server apparatus 30 checks the current time and determines whether or not the current time is within the service provision hours (step S141). If the current time is out of the service provision hours, the server apparatus 30 determines whether or not the current time is within the job hold period that is set for the user (see
On the other hand, if it is determined in step S142 that the job hold period has elapsed, the server apparatus 30 discards the job (step S144) and then notifies the client apparatus 10 of the user who has transmitted the present job (step S145).
Here, a message “out of service provision hours” and a message “the following job has been discarded” with specification of the job are displayed.
A further description will be given by referring back to
If it is determined in step S141 that the current time is within the service provision hours, the server apparatus 30 determines whether or not the current time is within the job hold period (step S146). As illustrated in
If it is determined in step S146 that the job hold period has elapsed, the server apparatus 30 discards the job (step S147) and notifies the client apparatus 10 of the user who has transmitted the present job (step S148).
Here, a message “the following job has been discarded” with specification of the job is displayed.
A further description will be given by referring back to
If it is determined in step S146 that the current time is within the job hold period, the server apparatus 30 transmits the job to the self-propelled printer 20 on the floor where there is the user, with information on the current position of the user being used as an argument, so as to instruct the self-propelled printer 20 to perform print output (step S149).
In response to the print output instruction, the self-propelled printer 20 moves to the user, authenticates the user, and performs print output. After finishing the print output, the self-propelled printer 20 notifies the server apparatus 30 that the print output has finished.
If print output fails, the self-propelled printer 20 notifies the server apparatus 30 that the print output has failed.
Plural print output instructions may be consecutively provided to the self-propelled printer 20. In this case, the self-propelled printer 20 sequentially performs the plural instructions. An issue of priority, that is, which instruction among the plural instructions is to be given priority, is not addressed here. In any case, if plural instructions are provided, a time delay may occur when the self-propelled printer 20 moves to the user. Thus, when the self-propelled printer 20 arrives at a place where the user is supposed to be present, the user has moved from the place to another place. In this case, the self-propelled printer 20 does not perform user authentication when moving to the place where the user is supposed to be present. Thus, if user authentication is not performed (or user authentication fails) within a predetermined period, the self-propelled printer 20 notifies the server apparatus 30.
Here, the server apparatus 30 determines whether the report indicates that the print output service has succeeded or failed (step S161). If the report indicates that the print output service has succeeded, the server apparatus 30 discards the present job stored in the server apparatus 30 (step S162), and the routine ends.
On the other hand, if the report indicates that the print output service has failed (step S161), the monitoring process routine illustrated in
Next, a description will be given of a second exemplary embodiment of the present invention.
The meal-serving system 200 includes a meal coupon vending machine 210, an order-receiving/meal-serving apparatus 220, a server apparatus 230, a self-propelled meal-serving robot 240, and an RFID reader 250. The meal coupon vending machine 210, the order-receiving/meal-serving apparatus 220, the server apparatus 230, the meal-serving robot 240, and the RFID reader 250 are capable of communicating with one another through a wireless LAN 201. Here, only one meal-serving robot 240 is illustrated, but the meal-serving system 200 may include plural meal-serving robots 240. There are provided many RFID readers 250 as illustrated in
The restaurant 260 includes a waiting area 261 adjacent to an entrance, a restroom 262 whose entrance/exit is in the waiting area 261, a hall 263, and a kitchen 264. The hall 263 includes a non-smoking section 263a and a smoking section 263b. The meal coupon vending machine 210 is installed in the waiting area 261. Also, plural tables 266 and plural chairs 267 for each of the plural tables 266 are placed in the hall 263. Furthermore, the order-receiving/meal-serving apparatus 220 is installed in the kitchen 264. Also, in
The meal coupon vending machine 210 is an apparatus that automatically vends meal coupons of dishes that are available at the restaurant 260. When a meal coupon is vended by the meal coupon vending machine 210, meal coupon information is transmitted to the server apparatus 230. The meal coupon information includes various pieces of information about the meal coupon, such as the time when the meal coupon is vended and the name of the dish. The server apparatus 230 stores the meal coupon information and transmits the meal coupon information to the order-receiving/meal-serving apparatus 220. The order-receiving/meal-serving apparatus 220 displays the meal coupon information on the display screen of the order-receiving/meal-serving apparatus 220. A cook looks at the display screen of the order-receiving/meal-serving apparatus 220 and is thereby able to know the sales status of meal coupons. Note that the meal-serving system 200 separately handles the sale of meal coupons and order reception of dishes corresponding to the meal coupons. This is because even if meal coupons are vended, seats may be unavailable and there may be customers on a waiting list. The order from each customer is received when the customer seats himself/herself. The waiting area 261 is provided with a panel 268 showing available seats. When a seat becomes available, a customer on a waiting list checks, on the panel 268, that there is an available seat and the position of the available seat, and moves to the seat. An employee of the restaurant 260 clears a table after a customer has finished with his/her meal, and then makes a notification indicating that there is an available seat and the table number of the seat, by using a remote control (not illustrated) carried by the employee. Accordingly, the information is displayed on the panel 268.
At the time of purchasing a meal coupon from the meal coupon vending machine 210, a customer designates “non-smoking section”, “smoking section”, or “either is OK”, in addition to a desired dish on the menu. A customer who has designated “non-smoking section” is able to use only the non-smoking section 263a. A customer who has designated “smoking section” is able to use only the smoking section 263b. A customer who has designated “either is OK” is able to use either of the non-smoking section 263a and the smoking section 263b.
The meal coupon 270 includes a name of a dish 271 to be ordered, a request 272 given at the purchase of the meal coupon 270: “non-smoking section, “smoking section”, or “either is OK”, and a date of sale 273 of the meal coupon 270.
Furthermore, the meal coupon 270 is embedded with an RFID tag 274. The RFID tag 274 contains electronic data written thereon. The electronic data represents information recorded on the meal coupon 270, such as a name of a dish. Furthermore, ID information specifying the meal coupon 270 is also written on the RFID tag 274. The meal coupon 270 is valid within the opening hours of the day on which the meal coupon 270 is vended.
A further description will be given by referring back to
There are the RFID readers 250 installed throughout the restaurant 260. Each of the RFID readers 250 reads ID information of the meal coupon 270 from the RFID tag 274 of the meal coupon 270, and reports the ID information of the meal coupon 270, information representing the reception intensity for reading the ID information, and the ID information of the RFID reader 250 to the server apparatus 230. Accordingly, the server apparatus 230 recognizes the position of the customer having the meal coupon 270 with reference to the pieces of information obtained from the plural RFID readers 250.
When a customer who had been on a waiting list is seated, the server apparatus 230 obtains the seat number of the customer's seat, and notifies the order-receiving/meal-serving apparatus 220 of the name of a dish written on the meal coupon 270 of the customer, so as to order the dish. A cook checks the order information and prepares the dish. When the dish is prepared, the cook operates the order-receiving/meal-serving apparatus 220 to notify the server apparatus 230 that the ordered dish is ready. In response to the notification, the server apparatus 230 displays an instruction to deliver the dish to the customer on the order-receiving/meal-serving apparatus 220 at appropriate timing. The cook or waiter who has checked the instruction places the dish on a serving box 241 of the meal-serving robot 240, closes a lid 241a of the serving box 241, designates a seat number, and instructs the meal-serving robot 240 to deliver the dish. In response to the instruction, the meal-serving robot 240 moves to the seat by avoiding obstacles using a camera 242. The meal-serving robot 240 is provided with an RFID reader 243. The RFID reader 243 is different from the RFID readers 250 installed throughout the restaurant 260 and has a shorter read range. When a customer puts the meal coupon 270 over the RFID reader 243 of the meal-serving robot 240, the RFID reader 243 reads the information written on the RFID tag 274 embedded in the meal coupon 270. The customer who is seated puts his/her meal coupon 270 over the RFID reader 243 of the meal-serving robot 240 that has delivered the dish. Accordingly, the information written on the RFID tag 274 embedded in the meal coupon 270 is read by the RFID reader 243 and the information is transmitted to the server apparatus 230. The server apparatus 230 confirms the information, and if there is no mistake, instructs the meal-serving robot 240 to open the lid 241a of the serving box 241. Accordingly, the lid 241a of the serving box 241 opens and the dish is served to the customer.
This order placement process routine is started when meal coupon information written on a meal coupon vended from the meal coupon vending machine 210 is transmitted to the server apparatus 230.
First, the server apparatus 230 stores the received meal coupon information in the server apparatus 230 (step S201) and transmits the meal coupon information to the order-receiving/meal-serving apparatus 220 (step S202). Accordingly, a cook is able to know that a meal coupon has been vended.
Subsequently, the server apparatus 230 checks the position of the customer who has purchased the meal coupon (step S203), and determines whether or not the position of the customer is within the service provision area (step S204). Whether or not the position is within the service provision area varies according to a customer. For a customer who designates “smoking section” when purchasing a meal coupon, only the smoking section 263b is a service provision area, and the other area, that is, the waiting area, the restroom, and the non-smoking section 263a, is a service prohibition area even within the restaurant 260. Likewise, for a customer who designates “non-smoking section” when purchasing a meal coupon, only the non-smoking section 263a is a service provision area. For a customer who designates “either is OK”, both the non-smoking section 263a and the smoking section 263b are service provision areas.
In a case where the position of the customer is determined to be outside the service provision area, two cases are possible. One of them is that the customer is within the restaurant 260 but is outside the service provision area, and the other is that the customer has left the restaurant 260. A meal coupon that has been purchased is valid for the day of the sale, and thus the user may leave the restaurant 260 after purchasing the meal coupon. When the customer is within the restaurant 260, the position of the customer is recognized even if the customer is outside the service provision area. On the other hand, if the customer leaves the restaurant 260, the position of the customer is undetectable.
If it is determined in step S204 that the customer is not in the service provision area regardless of whether the customer is within or outside the restaurant 260, check of the position of the customer is regularly performed (step S205) until the customer comes back to the service provision area (step S206).
If it is determined in step S204 that the customer is within the service provision area or if it is determined in step S206 that the customer has come back to the service provision area, check of the position of the customer is continued (step S207). If it is determined that the customer has been seated for a predetermined period, for example, for one minute (step S208), the meal of the customer is ordered to the order-receiving/meal-serving apparatus 220 (step S209).
In response to receipt of a notification, through an operation of the order-receiving/meal-serving apparatus 220, indicating that the dish of the customer is ready, the server apparatus 230 starts the delivery process routine.
Here, the position of the customer is checked (step S221). If the customer is not within the restaurant 260, the server apparatus 230 notifies the order-receiving/meal-serving apparatus 220 (step S223). The process thereafter is handed over to an employee of the restaurant 260.
If it is determined in step S222 that the customer is within the restaurant 260 but is in the service prohibition area (for example, in the restroom), the server apparatus 230 continues checking the position until the customer comes back to the service provision area (step S224). If it is determined in step S222 that the customer is within the service provision area or that the customer has come back to the service provision area, the server apparatus 230 further continues checking the position (step S225). If the server apparatus 230 determines that the customer has been seated for one minute, for example (step S226), the server apparatus 230 transmits, to the order-receiving/meal-serving apparatus 220, an instruction to deliver the dish to the customer (step S227). The delivery instruction is displayed on the display screen of the order-receiving/meal-serving apparatus 220. A person in charge who has checked the instruction causes the meal-serving robot 240 to deliver the dish in the manner described above.
If the report received from the meal-serving robot 240 indicates that delivery has been completed (step S241), the server apparatus 230 reports the completion of delivery to the order-receiving/meal-serving apparatus 220 (step S242) and erases the meal coupon information stored therein (step S243).
On the other hand, if the report received from the meal-serving robot 240 indicates that delivery has failed (step S241), the server apparatus 230 checks the position of the customer (step S244), and reports, to the order-receiving/meal-serving apparatus 220, information indicating that the delivery has failed and including the position information on the customer (step S245). The process thereafter is handed over to an employee of the restaurant 260. For example, if the customer goes to the restroom immediately after the meal-serving robot 240 starts delivery and if the delivery fails, the dish is delivered again at appropriate timing.
A description has been given of the print system 100 according to the first exemplary embodiment and the meal-serving system 200 according to the second exemplary embodiment. The service providing system according to an exemplary embodiment of the present invention is not limited to these two systems, and is widely applicable to various systems that detects the position of a user or the like, moves to the user, and provides a service to the user.
The foregoing description of the exemplary embodiments of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Number | Date | Country | Kind |
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2016-175165 | Sep 2016 | JP | national |
Number | Name | Date | Kind |
---|---|---|---|
20030214574 | Saruhashi | Nov 2003 | A1 |
20040169884 | Yamada | Sep 2004 | A1 |
20110063670 | Ito | Mar 2011 | A1 |
20130166348 | Scotto | Jun 2013 | A1 |
20150378652 | Sakurai | Dec 2015 | A1 |
Number | Date | Country |
---|---|---|
2001-125646 | May 2001 | JP |
2003-110779 | Apr 2003 | JP |
Number | Date | Country | |
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20180069935 A1 | Mar 2018 | US |