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Hirohisa Yamamoto
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Tokyo, JP
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last 30 patents
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Patent Grant
Exchange servicing development support system with a function of au...
Patent number
6,631,376
Issue date
Oct 7, 2003
NEC Corporation
Hirohisa Yamamoto
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Cancel undo method and system for tree structure data edition based...
Patent number
5,734,381
Issue date
Mar 31, 1998
NEC Corporation
Masaharu Yoshizawa
G06 - COMPUTING CALCULATING COUNTING