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Optical head
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Patent number 5,097,456
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Issue date Mar 17, 1992
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Oki Electric Industry Co., Ltd.
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Katsuhide Tanoshima
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G11 - INFORMATION STORAGE
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Electronic dictionary
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Patent number 4,890,230
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Issue date Dec 26, 1989
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Electric Industry Co., Ltd.
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Katsuhide Tanoshima
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G06 - COMPUTING CALCULATING COUNTING
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Ink mist type high speed printer
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Patent number 4,150,620
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Issue date Apr 24, 1979
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Oki Electric Industry Co., Ltd.
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Akinori Watanabe
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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