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Useful links
Patent Search
United States Patent and Trademark Office
http://www.uspto.gov/main/sitesearch.htm
Delphion (formerly IBM) Patent Server
Global Patent Offices
WIPO — World Intellectual Property Organization
Patent Cooperation Treaty Legal Office of the USPTO
http://www.uspto.gov/web/offices/pac/dapps/pct/
Japanese Patent Office
Canadian Intellectual Property Office
http://strategis.ic.gc.ca/sc_mrksv/cipo/welcome/welcom-e.html
European Patent Office
http://www.epo.co.at/index.htm
European Union Commission-Europa
United Kingdom Patent Office
Indian Patent Office
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