US Patent 7415276 Presence management server and system
Patent 7415276 was granted and assigned to Hitachi on August, 2008 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
December 20, 2005
Date of Patent
August 19, 2008
Patent Application Number
11311328
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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