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Developing apparatus for xerography
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Patent number 5,006,898
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Issue date Apr 9, 1991
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Hitachi Koki Co., Ltd.
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Junji Kobayashi
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Duplex printing machine
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Patent number 4,806,979
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Issue date Feb 21, 1989
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Hitachi Koki Co., Ltd.
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Hiroyoshi Tokoro
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Dot printer
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Patent number 4,481,880
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Issue date Nov 13, 1984
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Hitachi Koki Company Limited
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Makoto Kurosawa
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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