Since the development of the microwave oven, there has been a continuing consumer desire for microwave ready packaged meals. However, consumers desire packaged meals that are convenient to use, cooked evenly by the microwave, and taste like homemade food. Consumers additionally desire the packaged meals to be efficient and economic in use.
An aspect of the present disclosure relates to a multi-component packaging system including a lower containing assembly, an upper containing assembly, and a cover.
Another aspect of the present disclosure relates to a multi-component packaging system including a lower containing assembly, an upper containing assembly, and a cover. The lower containing assembly defines an interior cavity that is adapted to receive a first food component. The upper containing assembly defines an interior that is adapted to receive a second food component. The upper containing assembly is adapted for engagement with the lower containing assembly. The cover is engaged with at least one of the lower containing assembly and the upper containing assembly. The cover includes a passage portion that defines a plurality of apertures.
Another aspect of the present disclosure relates to a multi-component packaging system having a base container, a tray, and a cover. The base container defines an interior cavity in which a first food component is disposed. The tray is disposed within the interior cavity of the base container and is selectively removable from the interior cavity. The tray defines an interior in which a second food component is disposed. The cover is releasably engaged with the base container. The cover includes a passage portion defining a plurality of apertures.
Another aspect of the present disclosure relates to a microwavable container system including a base container and a cover. The base container defines an interior cavity having an interior volume. The interior cavity is adapted to receive a first food component and a fluid. The cover is selectively engaged with the base container and includes a passage portion and a containment wall extending upwardly from a top surface of the cover. The containment wall defines a volume for retaining fluid that passes through the passage portion during cooking. The cover further includes a surface tension breakage feature for disrupting the surface tension of the fluid in the interior cavity of the base container during cooking.
Another aspect of the present disclosure relates to a cover for a microwavable container. The cover includes a top surface having a brim portion and a bottom surface oppositely disposed from the top surface. The bottom surface is adapted for engagement with a base container. A containment wall extends upwardly from the top surface, the containment wall defines a cavity having a plurality of fluid passages. The cavity defines a volume that is adapted to retain fluid that passes through the plurality of fluid passages during heating.
Another aspect of the present disclosure relates to a container assembly for a microwavable food product. The container assembly includes a base container and a cover. The base container defines an interior cavity with an inner volume. The cover is adapted for engagement with the base container and includes a top surface having a brim portion and an oppositely disposed bottom surface. The bottom surface is adapted for engagement with the base container. A plurality of fluid passages is disposed on the cover. A containment wall extends upwardly from the top surface and surrounds the plurality of fluid passages. The containment wall defines a cavity above the top surface having a volume that is adapted to retain fluid that passes through the plurality of fluid passages from the interior of the cavity of the base container during heating.
It will be understood that the term “fluid” as used in the present disclosure is not limited to liquids, but rather includes liquids, gases, and vapors.
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
Reference will now be made in detail to the exemplary aspects of the present disclosure that are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like structure.
Given family commitments, work commitments, and household commitments, consumers rarely have time to prepare and clean-up after meals during the week. As a result, consumers may rely on microwave food products for their meals. While microwave food products are relatively easy to cook, what is desired is a microwave food product that is conveniently packaged for storage and cooking and that requires little clean-up after cooking.
Referring now to
In one aspect of the present disclosure, the multi-component packaging system 10 includes at least one containing assembly, generally designated 12. The containing assembly 12 may be suitable for separably containing a plurality of food components, including meats, seafoods, sauces, toppings, starches (e.g., pasta, rice, etc.), vegetables, potatoes, fruits, dairy products, and the like.
In one aspect of the present disclosure, the multi-component packaging system includes an upper containing assembly 14 and a lower containing assembly 16. The upper containing assembly 14 and the lower containing assembly 16 are formed from an upper base assembly and a lower base assembly, respectively. The upper base assembly includes a base 20a and a sidewall 22a. The lower base assembly includes a base 20b and a sidewall 22b. Each sidewall 22a, 22b is continuous with the base 20a, 20b, respectively, and terminates in a free edge 24a, 24b, respectively. The free edges 24a, 24b define openings 25a, 25b in the upper and lower containing assemblies 14, 16.
A polymeric film 26 may be used to cover at least one of the upper containing assembly 14 and the lower containing assembly 16. The polymeric film 26 is sufficiently affixed to the free edge 24a, 24b of the at least one of the upper and lower containing assemblies 14, 16 to serve as a splatter guard when the at least one of the upper and lower containing assemblies 14, 16 is placed into a microwave oven for heating of food.
Any of the upper and lower containing assemblies 14, 16 may include a cover 30. In one aspect of the present disclosure, the cover 30 includes multiple layers. The cover 30 can include a first layer 32 and a second layer 34. The first layer 32 defines a plurality of apertures 36. The plurality of apertures 36 allows the flow of fluid into and out of the containing assembly 14, 16 on which the first layer 32 is affixed while preventing the contents of that containing assembly 14, 16 from spilling out. As previously stated, the term “fluid” as used in the present disclosure shall be understood to include liquids, gases, and/or vapors.
The second layer 34 may hermetically seal the contents of the containing assembly 14, 16. It will be understood, however, that the scope of the present disclosure is not limited to the second layer 34 hermetically sealing the contents of the containing assembly 14, 16. The second layer 34 may be removed, such as by peeling away, to reveal the first layer 32.
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Each of the containing sections 102 has a top portion 106 (shown in
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Referring now to FIGS. 1A and 10-14, examples of the assembled multi-component packaging system 10 are shown. The free edge 24b of the lower container assembly 16 may be coupled with either the free edge 24a or the base 20a of the upper assembly 14. In one aspect of the present disclosure, the upper and lower containing assemblies 14, 16 are releasable secured together such that the free edges 24a, 24b overlay one another to protect the plurality of apertures 36. In the depicted example of
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The multi-component packaging system 10 may be composed of a highly durable and reusable material such as a plastic, rigid plastic, polymer, metal or metal alloy, styrofoam or like material, or may be composed of a disposable and easily biodegradable material, such as paper, or may be composed of any other material suitable for separably containing a variety of food components as described.
The components of the multi-component packaging system 10 may comprise a thermal insulating layer. For instance, the components may be composed of a thermoformable polystyrene or polyethylene material or optionally a thermoformable plastics material mix. The thermal insulating layer may comprise an organic thermoplastic fiber based material comprising polyester, polyethylene or polypropylene. In one example, the thermal insulating layer is a fiberfill batting comprising polyester. Alternatively, the thermal insulating layer may comprise melt blown fibers, such as melt blown polyolefins, sold as THINSULATE®, by 3M.
Many other variations of insulating material for the thermal insulating layer can be used with the multi-component packaging system 10. For instance, the thermal insulating layer may comprise a foam, such as foamed polypropylene, or any other foam composition as known in the art that may be subjected to microwave heating. Or the thermal insulating layer may be made of an inorganic thermoplastic fiber based material comprising glass wool, borosilicate glass or rockwool. The packaging system components may be formed using standard molding techniques, including but not limited to injection molding, thermoforming, and blow molding.
Any of the components of the multi-component packaging system 10 may also comprise a first, or inner-most fabric layer, a second inner-most insulating layer which includes a polymeric foam, a third inner-most metallized polymer film reflective layer, and an outer-most fabric mesh layer. Also known in the film art is a thin electrical tape which comprises a polyester web-reinforced polyester film, as disclosed in 3M Utilities and Telecommunications OEM.
The thermal insulating layer may be laminated to multi-layer face materials. By “lamination” is meant uniting layers of material by an adhesive, by heating or other means. The face material may be film, paper and/or fabric. The film is made of a thermoplastic material comprising polyester, polyethylene or polypropylene. In one example, the thermal insulating layer is laminated between two sheets of face material of film, paper or fabric. However, it is within the scope of the present disclosure to laminate a single sheet of face material to the thermal insulating layer. The use of a single sheet of face material will not affect the thickness of the packaging material substantially, since the thickness of the face material is insignificant compared to the total thickness of the packaging material. The packaging material of the present disclosure may be thick enough, such as greater than 0.0075 inch (0.0190 cm.) thick, to provide adequate insulation for a package. Also, the packaging material may be thin enough to be flexible, and should be preferably less than 0.07 inch (0.1778 cm). It is contemplated however, that further additional examples of the containing assembly 12 may be substantially rigid and inflexible for application requiring a more durable containing assembly 12.
In an example suitable for microwave preparation, at least one of the components of the multi-component packaging system 10 may also comprise a microwave susceptible coating. Composite materials for use as microwave susceptors are also known. U.S. Pat. No. 5,021,293 shows a polyethylene terephthalate film coated with flakes of electrically conductive metal or metal alloy. U.S. Pat. No. 4,892,782 shows drapable liquid permeable woven or nonwoven fibrous dielectric substrates that are coated with susceptor materials which can be wrapped around food items for microwave heating. In one example, the microwave susceptible coating preferably is a metal or metal alloy, such as aluminum, stainless steel, nickel/iron/molybdenum alloys and nickel/iron/copper alloys. The coating is applied to an outer surface of first layer, preferably by vapor coating or alternatively by coating a solution of metal particles dispersed in a solvent over a surface of the layer. The coating could also be applied to second layer before joining layers together if layers are separate layers. For a metal or metal alloy as the susceptor, the preferred coating thickness may be from about 20 to 100 Angstroms, preferably from about 50 to 70 Angstroms. Alternatively, the coating thickness for a metallic microwave susceptible coating may be measured in optical density as measured with a Tobias TBX Densitometer, offered by Tobias Associates, Inc. of Glenside, Pa., USA, and preferably is in the range of from about 0.35 to 0.12. Further, a sealant may coat the microwave susceptible coating. The sealant comprises a layer of one or more polymers, such as a polyester copolymer, poly(vinylidene chloride), or a copolymer of ethylene with vinyl acetate.
Any or all components of the multi-component packaging system 10 and contents may require sterilization such as retorting to ensure bacterial elimination from the food products enclosed therein. Retorting may refer to any process of cooking food in the package it is sold in, such as meat or vegetables that need to cook at a particular temperature to kill off the micro-organisms and avoid botulism. The temperature is generally around 121 degrees Celsius. Retorting of the various sections may occur separately, to preserve the desired texture, flavor, appearance and other characteristics of the separate food components. The various components of the multi-component packaging system 10 and apparatus may then be assembled in the manners described, or in any manner suitable for assembling and packaging the food contents for sale and consumption.
The packaging material of the present disclosure can further include a coating on the face material. The coating is provided on the non-heat sealable surface of the face material. This coating is printable, so that the packaging material may also function as a label. The coating is a standard print primer based on aqueous polymer dispersions, emulsions or solutions of acrylic, urethane, polyester or other resins well known in the art. Alternatively, if the thermal insulating layer is previously printed, and the face material is clear, the need for coating the face material to make it printable may be eliminated.
The multi-component packaging system 10 may further comprise a receptacle for storing a utensil such as a fork, spoon, knife or any other utensil suitable for mixing or consuming meal components.
The methods disclosed may be implemented as sets of instructions, through a single production device, and/or through multiple production devices. Further, it is understood that the specific order or hierarchy of steps in the methods disclosed are examples of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the method can be rearranged while remaining within the scope and spirit of the present disclosure.
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The base wall 320 and the sidewall 322 cooperatively define an interior cavity 328. The interior cavity 328 of the base container 314 defines an interior volume. In one aspect of the present disclosure, the interior volume is in the range of about 8 oz. to about 32 oz. In another aspect of the present disclosure, the interior cavity 328 defines an interior volume less than or equal to about 32 oz., less than or equal to about 24 oz., less than or equal to about 20 oz., less than or equal to about 18 oz., less than or equal to about 16 oz., less than or equal to about 12 oz., or less than or equal to about 8 oz.
The sidewall 322 defines an opening 330 to the interior cavity 328 disposed at the second end 326 of the sidewall 322. In one aspect of the present disclosure, the opening 330 defines an area in the range of about 20 cm2 to about 774 cm2. In another aspect of the present disclosure, the opening 330 defines an area less than or equal to about 645 cm2, less than or equal to about 322 cm2, less than or equal to about 258 cm2, less than or equal to about 192 cm2, less than or equal to about 128 cm2, less than or equal to about 64 cm2, or less than or equal to about 32 cm2.
A flange portion 332 is disposed at the second end 326 of the sidewall 322. The flange portion 332 of the sidewall 322 includes a lip 334. In one aspect of the present disclosure, the lip 334 extends around a portion of the interior cavity 328. In the depicted example of
The lip 334 defines a plurality of recesses 336. In one aspect of the present disclosure, the lip 334 defines at least two recesses 336. In the depicted example of
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The free end 346 of the rim portion 342 extends outwardly from the base end 344 and defines an upper surface 350. In the depicted example, the free end 346 extends outwardly from the base end 344 in a generally perpendicular direction. The free end 346 includes an edge 352 that will be described in greater detail subsequently.
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In another aspect of the present disclosure, each of the first and second handles 354a, 354b include a gripping surface 356 and a plurality of reinforcement members 358 (shown in
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The tray 316 includes a base 402 and a side 404. The side 404 includes first end portion 406 and an oppositely disposed second end portion 408. The first end portion 406 is connectedly engaged with the base 402 such that the side 404 extends outwardly from an outer periphery of the base 402. In one example, the base 402 and the side 404 are continuous or monolithic.
The base 402 and the side 404 cooperatively define an interior 410. The side 404 defines a tray opening 412 to the interior 410 disposed at the second end portion 408 of the side 404.
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The flange 414 includes a ridge 420 disposed at the first axial end portion 416. The ridge 420 extends outwardly from the side 404. In one aspect of the present disclosure, the ridge 420 extends around a portion of the interior 410. In the depicted example of
The flange 414 further includes a rim 422 disposed at the second axial end portion 418. The rim 422 extends outwardly from the side 404 and is adapted for engagement with the lip 334 of the base container 314.
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As previously stated, the rim 422 is adapted for engagement with the lip 334 of the base container 314. As the tray 316 is lowered into the interior cavity 328 of the base container 314, a portion of the rim 422 abuts a portion of the lip 334. The engagement of the rim 422 and the lip 334 supports the tray 316 in the interior cavity 328 of the base container 314.
In one aspect of the present disclosure, the axial distance between the rim 422 and the base 402 of the tray 416 is less than the axial distance between the lip 334 and the base wall 320 of the base container 314. In this example, the base 402 of the tray 316 is axially displaced from the base wall 320 of the base container 314 when the rim 422 of the tray 316 is engaged with the lip 334 of the base container 314. The axial displacement of the base 402 of the tray 316 and the base wall 320 forms a gap 428 (shown in
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In one aspect of the present disclosure, the plurality of apertures 512 define a total open area that is in the range of about 2.5% to 15% of an effective area of the cover 318, where the effective area of the cover 318 is the area of the cover 318 that is subjected to fluid (liquid, gas, vapor) that is within the base container during heating of the fluid or draining of the fluid. In another aspect of the present disclosure, the total open area is in the range of about 4% to about 8% of the effective area of the cover 318. In another aspect of the present disclosure, total open area is greater than about 2.5% of the effective area of the cover 318, greater than about 4% of the effective area of the cover 318, or greater than about 10% of the effective area of the cover 318.
In one aspect of the present disclosure, each of the plurality of apertures 512 is a hole having an inner diameter. By way of example only, the inner diameter of each of the plurality of apertures is in a range of about 1.5 mm to about 6.5 mm. In another aspect of the present disclosure, the number of apertures disposed on the cover 318 is at least 20, at least 25, at least 30, at least 45, at least 60, or at least 65.
The passage portion 502 includes a plurality of ribs 514 that radiate partially inward from the outer portion 506 of the passage portion 502 toward the center of the convex portion 508. In one aspect of the present disclosure, there are six ribs 514 symmetrically disposed about a first center axis 515 and a second center axis 516 that is generally perpendicular to the first center axis 515. The ribs 514 include an upper surface 517 that is generally planar. The upper surface 517 of the ribs 514 provides an attachment site for a label or tamper-evident wrapping. The ribs 514 further provide increased stability of the convex portion 508. In addition, the upper surface 517 of the ribs 514 provide a surface on which another multiple component packaging system 310 can be stored (see
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In one aspect of the present disclosure, the inner cavity 520 of the containment wall 518 is adapted to receive the base container 314 of another multiple component packaging system 310 when multiple component packaging systems 310 are disposed in a stacked configuration. While the base container 314 of the adjacent multiple component packaging system 310 is not firmly retained in the inner cavity 520, the containment wall 518 prevents excess lateral movement of the adjacent base container 314 which would otherwise result in the adjacent base container 314 falling off the cover 318 if the containment wall 518 was not present.
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The collar 526 defines an inner surface 532 having a tab 534 protruding outwardly from the inner surface 532. The collar 526 is adapted to interlockingly engage the flange portion 332 of the base container 314. In one aspect of the present disclosure, the tab 534 is adapted to engage the edge 352 of the free end 344 of the rim portion 342 of the base container 314. The tab 534 is sized such that that the collar 526 flexes outwardly from the free end 346 of the rim portion 342 of the base container 314 as the cover 318 is initially engaged with the base container 314. When the tab 534 passes the edge 352 of the free end 345 of the base container 314, the collar 526 springs back. This springing back of the collar 526 after the tab 534 passes the edge 352 produces an audible clicking sound that alerts the consumer that the cover 318 is properly engaged with the base container 314.
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It is within the scope of the present disclosure for the first and second food components to include food components that are stored in a shelf-stable state, a refrigerated state, or a frozen state. In one aspect of the present disclosure, the first and second food components 602, 604 are shelf-stable food components. In another aspect of the present disclosure, the first and second food components 602, 604 are partial ingredients to a meal. For example, the first food component 602 could be a primary food component (e.g., starch-based component, protein-based component, vegetable-based component, combinations thereof, etc.) while the second food component 604 is a seasoning component (e.g., sauce, herbs, etc.).
In another aspect of the present disclosure, the first food component 602 disposed in the interior cavity 328 of the base container 314 is a starch-based and/or protein-based food component (e.g., pasta, rice, beans, etc.) that is dehydrated or partially dehydrated. A fluid (e.g., water, broth, etc.) is added to the base container 314 and used to hydrate the at least partially dehydrated food component. In order to properly hydrate the food component, the fluid is heated during a cooking process so that the fluid boils.
When a fluid such as water is used to cook starch-based food components, foam develops on the top surface of the fluid during boiling as a result of starches and proteins in the starch-based food component. As the foam continues to develop, the foam can flow over (i.e., boil-over) the edge of a microwavable container thereby creating a spill on a bottom surface of the microwave. While sidewalls of the microwavable container can be increased such that the foam will not flow over the edge of the microwavable container during cooking, such a design makes the portion of the food component disposed in the microwavable container look small, which could negatively affect the consumers desire to purchase the product.
In one aspect of the present disclosure, the container assembly 312 includes features that reduce or eliminate the risk of boil-over during cooking. In one example, the container assembly 312 includes a fluid volume containment feature and a surface tension breakage feature.
In order to reduce or eliminate boil-over and preserve an appropriate proportion between the amount of the first food component 602 disposed in the interior cavity 328 and the interior volume of the interior cavity 328 of the base container 314, the container assembly 312 includes the fluid volume containment feature, which allows fluid to be restrained above and below the cover 318 from flowing over an edge of the container assembly 312. As the fluid in the container assembly 312 boils, the foam generated by the starches and proteins in the starch-based food component 602 fills the interior cavity 328 of the base container 314. The foam passes through the plurality of apertures 512 in the cover 318 and is retained on the cover 318 by the containment wall 518, thereby preventing foam from flowing over the edge of the container assembly 312.
By containing fluid above the cover 318 in the inner volume of the containment wall 518, the volume of the base container 314 can be made smaller, which improves the perception of the amount or portion of the first food component 602 in the base container 314. However, even with the volume of the base container 314 reduced, the effective volume (containment volume above and below the cover 318) of the container assembly 312 can still reduce or eliminate the risk of boil-over.
The surface tension breakage feature of the container assembly 312 also reduces or eliminates the risk of boil-over. The residual starches in the starch-based food component increase the surface tension of the water in the base container 314. As a result of this increased surface tension, bubbles from the boiling water begin to accumulate and rise. The surface tension breakage feature disrupts the formation of bubbles. In one example, the surface tension breakage feature is a textured surface (e.g., ridges, bumps, etc.) that breaks the bubbles of the foam on contact. In one aspect of the present disclosure, the cover 318 includes the surface tension breakage feature on an interior surface 536 that faces the interior cavity 328 of the base container 314 when the cover 318 is disposed on the base container 314. In another aspect of the present disclosure, the cover 318 includes the surface tension breakage feature on the outer surface 510.
In one aspect of the present disclosure, the container assembly 312 includes a chemical agent that affects the formation of foam during the cooking process. In one aspect of the present disclosure, the chemical agent is applied to the first food component 602. In another aspect of the present disclosure, the chemical agent is applied to inner surfaces of the sidewalls 322 that face the interior cavity 328 of the base container 314. In another aspect of the present disclosure, the chemical agent is an ingredient of the first food component 602.
The chemical agent can be any one or combination of the following: oil (e.g., vegetable oil, nut oil, etc.); lecithin and lecithin modifications and derivatives; monoglycerides (e.g., acetylated monoglyceride, etc.), diglycerides, and triglycerides of various Fatty Acid sources, lengths, modifications (e.g., enzymatic, chemical, etc.) and derivatives (e.g., glycerin, etc.); and chemical or synthetic surfactants (e.g., silicon based antifoaming agents, etc.). It will be understood, however, that the scope of the present disclosure is not limited to the chemical agent being one of the above list.
In one aspect of the present disclosure, the base container 314 includes indicium 362 (shown in
In one example, the amount of fluid to be added to the base container 314 is proportional to the amount of the first food component 602 in the interior cavity 328 of the base container 314. In one example, the ratio of the amount of fluid added to the amount of first food component 602 in the base container 314 is in the range of about 2:1 to about 6:1. In one example, the amount of fluid added to base container 314 is the same regardless of the type (e.g., rice, pasta, etc.) of the at least partially dehydrated first food component 602 disposed in the interior cavity 328 of the base container 314.
In another example, in order to reduce or eliminate the risk of boil-over, the volume taken up by the amount of fluid and the amount of first food component 602 in the interior cavity 328 is less than or equal to about 60% of the total volume of the interior cavity 328 of the base container 314.
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The set of instructions 702 include a plurality of steps 704 that instruct the consumer on how to prepare the first and second food components 602, 604. In one aspect of the present disclosure, the set of instructions 702 can include text, graphics, symbols, colors, etc.
In the example depicted in
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Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
The present application claims priority to related Provisional Patent Application Ser. No. 60/904,765 entitled MULTI-COMPONENT PACKAGING SYSTEM AND APPARATUS and filed on Mar. 2, 2007. The above disclosure is hereby incorporated in its entirety.
Number | Date | Country | |
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60904765 | Mar 2007 | US |