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Photo-detecting device
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Patent number 7,208,811
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Issue date Apr 24, 2007
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Matsushita Electric Industrial Co., Ltd.
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Seiichiro Tamai
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H01 - BASIC ELECTRIC ELEMENTS
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Bar-code reader device
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Patent number 5,471,041
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Issue date Nov 28, 1995
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Matsushita Electric Industrial Co., Ltd.
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Katsushi Inoue
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G06 - COMPUTING CALCULATING COUNTING
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Bar code reader
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Patent number 5,349,171
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Issue date Sep 20, 1994
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Matsushita Electric Industrial Co., Ltd.
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Seiichiro Tamai
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G06 - COMPUTING CALCULATING COUNTING