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Atushi Sudo
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Osaka, JP
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Patent number
7,931,417
Issue date
Apr 26, 2011
Sakura Color Products Corporation
Hiroyoshi Yamamoto
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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20100021228
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Jan 28, 2010
Hiroyoshi Yamamoto
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES