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Uncurling device
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Patent number 5,300,012
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Issue date Apr 5, 1994
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Ricoh Company, Ltd.
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Takeshi Kamada
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Integrated reader/recorder
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Patent number 4,789,903
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Issue date Dec 6, 1988
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Ricoh Company, Ltd.
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Takeshi Kamada
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Recording head
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Patent number 4,251,822
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Issue date Feb 17, 1981
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Ricoh Company, Ltd.
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Kazuyuki Hara
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G06 - COMPUTING CALCULATING COUNTING