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Hiroki Sugiyama
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Mishima, JP
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last 30 patents
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Patent Grant
Image forming device utilizing laser beam
Patent number
6,008,835
Issue date
Dec 28, 1999
Ricoh Company, Ltd.
Hiroki Sugiyama
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
Thermosensitive image transfer recording medium
Patent number
5,045,383
Issue date
Sep 3, 1991
Ricoh Company, Ltd.
Mitsuru Maeda
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS