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Electronic timepiece
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Patent number 8,213,266
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Issue date Jul 3, 2012
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Casio Computer Co., Ltd.
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Tomoo Kasuo
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G04 - HOROLOGY
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Electronic timepiece
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Patent number 8,111,590
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Issue date Feb 7, 2012
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Casio Computer Co., Ltd.
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Yoshinori Asami
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G04 - HOROLOGY
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Stopwatch
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Patent number 5,151,885
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Issue date Sep 29, 1992
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Casio Computer Co., Ltd.
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Tomoo Kasuo
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G04 - HOROLOGY
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Electronic key apparatus
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Patent number 4,786,900
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Issue date Nov 22, 1988
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Casio Computer Co. Ltd.
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Katsuaki Karasawa
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G07 - CHECKING-DEVICES