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Rear projection screen
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Patent number 4,509,823
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Issue date Apr 9, 1985
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Dai Nippon Insatsu Kabushiki Kaisha
-
Yutaro Moriguchi
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Rear projection screen
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Patent number 4,490,010
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Issue date Dec 25, 1984
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Dai Nippon Insatsu Kabushiki Kaisha
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Makoto Honda
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Magnetic recording structure
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Patent number 4,376,006
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Issue date Mar 8, 1983
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Dai Nippon Insatsu Kabushiki Kaisha
-
Seiichi Nishikawa
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G11 - INFORMATION STORAGE
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Magnetic recording structure
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Patent number 4,315,145
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Issue date Feb 9, 1982
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Dai Nippon Insatsu Kabushiki Kaisha
-
Seiichi Nishikawa
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G11 - INFORMATION STORAGE