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last 30 patents
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Patent Grant
Communication system and time synchronization method
Patent number
9,407,389
Issue date
Aug 2, 2016
Hitachi, Ltd.
Masahiko Mizutani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
COMMUNICATION SYSTEM AND TIME SYNCHRONIZATION METHOD
Publication number
20150085852
Publication date
Mar 26, 2015
Hitachi, Ltd
Masahiko MIZUTANI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PASSIVE OPTICAL NETWORK SYSTEM, STATION SIDE APPARATUS AND POWER CO...
Publication number
20120128349
Publication date
May 24, 2012
Hitachi, Ltd.
Daiji MITSUNAGA
H04 - ELECTRIC COMMUNICATION TECHNIQUE