US Patent 7542631 Optical transmission system
Patent 7542631 was granted and assigned to Nippon Telegraph and Telephone on June, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
April 21, 2008
Date of Patent
June 2, 2009
Patent Application Number
12081733
Patent Inventor Names
Yutaka Miyamoto
0
Akihiko Matsuura
0
Kazushige Yonenaga
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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