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Electric conversion device
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Patent number 4,980,736
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Issue date Dec 25, 1990
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Hitachi, Ltd.
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Yukio Takasaki
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H01 - BASIC ELECTRIC ELEMENTS
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TV Camera tube
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Patent number 4,492,981
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Issue date Jan 8, 1985
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Nippon Hoso Kyokai
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Kazuhisa Taketoshi
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H01 - BASIC ELECTRIC ELEMENTS
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Evaporation device
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Patent number 4,392,452
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Issue date Jul 12, 1983
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Nippon Hoso Kyokai
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Kazuhisa Taketoshi
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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