Patents

Indian Patent Information Retrieval System (IPIRS) : http://www.ipindia.nic.in/patent-information-system.htm
Indian Patent design and trademark office : http://www.ipindia.nic.in/
World Intellectual Property Organization (WIPO) : https://www.wipo.int/portal/en/
US Patent and Trademark Office (PTO) : http://patft.uspto.gov/
AUS Pat : http://pericles.ipaustralia.gov.au/ols/auspat/quickSearch.do
Esp@cenet : https://worldwide.espacenet.com/?locale=en_EP
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