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Microwave vending machine
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Patent number 5,449,888
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Issue date Sep 12, 1995
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Patentsmith Technology, Ltd.
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Donald P. Smith
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G07 - CHECKING-DEVICES
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Food handling system
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Patent number 5,210,387
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Issue date May 11, 1993
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Patentsmith Corporation
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Donald P. Smith
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A21 - BAKING EDIBLE DOUGHS
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Microwave vending machine
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Patent number 5,147,994
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Issue date Sep 15, 1992
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Patentsmith Corporation
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Donald P. Smith
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A21 - BAKING EDIBLE DOUGHS