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Printer platen
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Patent number 4,934,850
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Issue date Jun 19, 1990
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Ricoh Company, Ltd.
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Toshimitsu Okubo
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Printer paper bail device
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Patent number 4,799,814
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Issue date Jan 24, 1989
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Ricoh Company, Ltd.
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Toshimitsu Okubo
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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-
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Printing machine
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Patent number 4,275,969
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Issue date Jun 30, 1981
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Ricoh Company, Ltd.
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Koh Matsuhisa
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS