The King is gone
2010-11-20
Several Patent Search Engines
Free Patents Online:
http://www.freepatentsonline.com/
Patent Storm:
http://www.patentstorm.us/
Google Patents:
http://www.google.com/patents
United States Patent:
http://www.uspto.gov/
World Intellectual Property Organization:
http://www.wipo.int/
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