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Shinako Mastuyama
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Tokyo, JP
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last 30 patents
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Patent Application
Public key certificate issuing system, public key certificate issui...
Publication number
20100228970
Publication date
Sep 9, 2010
SONY CORPORATION
Makoto Oka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Application
Public key certificate issuing system, Public key certificate issui...
Publication number
20020108042
Publication date
Aug 8, 2002
Makoto Oka
H04 - ELECTRIC COMMUNICATION TECHNIQUE