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Semiconductor device
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Patent number 4,970,575
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Issue date Nov 13, 1990
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Hitachi, Ltd.
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Tasao Soga
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H01 - BASIC ELECTRIC ELEMENTS
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Display panel
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Patent number 4,543,573
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Issue date Sep 24, 1985
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Hitachi, Ltd.
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Moriaki Fuyama
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Semiconductor device
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Patent number 4,262,295
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Issue date Apr 14, 1981
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Hitachi, Ltd.
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Sadao Okano
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H01 - BASIC ELECTRIC ELEMENTS
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