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Patents

• India patent office – http://www.patentoffice.nic.in/
• Patent search database – http://www.ipindia.nic.in/patsea.htm
• US patent office – http://www.uspto.gov/
• Patent search database – http://patft.uspto.gov/
• Japan patent office – http://www.jpo.go.jp/
• Patent search database – http://www19.ipdl.inpit.go.jp/PA1/cgi-bin/PA1INIT?1243405233714
• Interesting – http://www.google.com/patents