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Optical component
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Patent number 6,874,947
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Issue date Apr 5, 2005
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Cimeo Precision Co., Ltd.
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Sadao Minegishi
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G02 - OPTICS
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Magnetic head
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Patent number 5,629,821
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Issue date May 13, 1997
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Citizen Watch Co., Ltd.
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Makoto Wakasugi
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G11 - INFORMATION STORAGE
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Piezolelectric oscillator
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Patent number 5,585,687
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Issue date Dec 17, 1996
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Citizen Watch Co., Ltd.
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Hisao Wakabayashi
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H03 - BASIC ELECTRONIC CIRCUITRY