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Optical printer
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Patent number 5,126,758
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Issue date Jun 30, 1992
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Ricoh Company, Ltd.
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Mitsutoyo Kikuno
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G06 - COMPUTING CALCULATING COUNTING
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Programmable copier
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Patent number 4,627,715
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Issue date Dec 9, 1986
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Ricoh Company, Ltd.
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Mitsutoyo Kikuno
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Servo system
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Patent number 4,565,950
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Issue date Jan 21, 1986
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Ricoh Company, Ltd.
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Mitsutoyo Kikuno
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G05 - CONTROLLING REGULATING