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Shuzo Matsumoto
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Fujisawa, JP
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Patents Grants
last 30 patents
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Patent Grant
Portable information processing apparatus
Patent number
6,840,448
Issue date
Jan 11, 2005
Hitachi, Ltd.
Shinichiro Fukushima
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Power supply apparatus
Patent number
5,705,920
Issue date
Jan 6, 1998
International Business Machines Corporation
Yoshiteru Watanabe
G05 - CONTROLLING REGULATING
Patents Applications
last 30 patents
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Patent Application
Portable information processing apparatus
Publication number
20040041025
Publication date
Mar 4, 2004
Shinichiro Fukushima
G06 - COMPUTING CALCULATING COUNTING