US Patent 7549515 Electrical elevator rescue system
Patent 7549515 was granted and assigned to Otis Elevator Company on June, 2009 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
October 7, 2003
0
Date of Patent
June 23, 2009
0
Patent Application Number
10575024
0
Patent Citations Received
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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