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Hiroyuki Koizumi
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Chiba, JP
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last 30 patents
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Patent Grant
Drive member sensing arrangement for an automatic focusing system o...
Patent number
5,175,577
Issue date
Dec 29, 1992
Seikosha Co., Ltd.
Nobuo Shinozaki
G02 - OPTICS
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Patent Grant
Camera
Patent number
4,920,372
Issue date
Apr 24, 1990
Seikosha Co., Ltd.
Tadashi Nakagawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY