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Patent search Espacenet offers free access to more than 70 million patent documents worldwide, containing information about inventions and technical developments from 1836 to today. Direct access http://gb.espacenet.com/search97cgi/s97_cgi.exe?Action=FormGen&Template=gb/EN/home.hts
Patent search Espacenet offers free access to more than 70 million patent documents worldwide, containing information about inventions and technical developments from 1836 to today. Direct access Access Espacenet at the EPO Search the EPO's databases in German, English and French

Espacenet

http://www.epo.org/searching/free/espacenet.html
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Carrot2 Search Results Clustering Engine Carrot 2 organizes your search results into topics. With an instant overview of what's available, you will quickly find what you're looking for.