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Light beam scanning apparatus
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Patent number 5,084,715
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Issue date Jan 28, 1992
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Ricoh Company, Ltd.
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Takashi Mama
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G06 - COMPUTING CALCULATING COUNTING
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Light beam scanning apparatus
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Patent number 4,933,549
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Issue date Jun 12, 1990
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Ricoh Company, Ltd.
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Takanobu Fujioka
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Image forming apparatus
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Patent number 4,914,459
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Issue date Apr 3, 1990
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Ricoh Company, Ltd.
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Takashi Mama
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G06 - COMPUTING CALCULATING COUNTING
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