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Yoshimitsu Ebisawa
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Koganei-shi, JP
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last 30 patents
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Patent Application
TELEPHONE SYSTEM AND SERVER APPARATUS AND CONTROL METHOD USED IN TE...
Publication number
20120307994
Publication date
Dec 6, 2012
Yasumasa Sasaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Patent Application
Telephone System, Telephone Exchange Apparatus, and Connection Cont...
Publication number
20110228762
Publication date
Sep 22, 2011
Yoshimitsu Ebisawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE