American National Standards Institute (ANSI)
http://web.ansi.org/

CyberStacks: Technology
http://www.public.iastate.edu/~CYBERSTACKS/hybrow_t.htm

Europe's Network of Patent Databases
http://ep.espacenet.com/espacenet/ep/en/level1.htm

Delphion Intellectual Property Network
http://www.delphion.com/

Invention Master Resource List
http://sulcus.berkeley.edu/FLM/SH/MDL/Invention/Invention.Masterlist.html

National Technology Transfer Center
http://www.nttc.edu/

Physical Sciences, Engineering, Computing & Math INFOMINE
http://infomine.ucr.edu/

United States Patent and Trademark Office
http://www.uspto.gov/

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