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Tatsuya Miyauchi
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Network linkage type private branch exchange system and control met...
Patent number
6,873,699
Issue date
Mar 29, 2005
NEC Corporation
Tatsuya Miyauchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Private branch exchange network system
Patent number
6,625,275
Issue date
Sep 23, 2003
NEC Corporation
Tatsuya Miyauchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
Network linkage type private branch exchange system and control met...
Publication number
20010033645
Publication date
Oct 25, 2001
NEC Corporation
Tatsuya Miyauchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE