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Process of producing IC cards
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Patent number 6,036,797
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Issue date Mar 14, 2000
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Citizen Watch Co., Ltd.
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Toyoji Kanazawa
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G06 - COMPUTING CALCULATING COUNTING
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IC card
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Patent number 4,994,659
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Issue date Feb 19, 1991
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Citizen Watch Co., Ltd.
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Isao Yabe
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G06 - COMPUTING CALCULATING COUNTING
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Resin encapsulating method
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Patent number 4,954,308
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Issue date Sep 4, 1990
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Citizen Watch Co., Ltd.
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Isao Yabe
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL