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Color image forming apparatus
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Patent number 4,987,428
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Issue date Jan 22, 1991
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Ricoh Company, Ltd.
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Kazunori Bannai
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Color recording apparatus
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Patent number 4,933,727
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Issue date Jun 12, 1990
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Ricoh Company, Ltd.
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Kenichi Mizuma
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Plotter
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Patent number 4,384,298
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Issue date May 17, 1983
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Hewlett-Packard Company
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Lawrence J. LaBarre
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY