US Patent 6857490 Stair-climbing wheelchair
Patent 6857490 was granted and assigned to LG on February, 2005 by the United States Patent and Trademark Office.
Is a
Date Filed
December 11, 2002
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Date of Patent
February 22, 2005
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Patent Application Number
10316717
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Patent Citations Received
Patent Inventor Names
Robert T. Quigg
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Patent Jurisdiction
Patent Number
Patent Primary Examiner
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