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Resources for Finding Patents
Espacenet provides access to international patent documents and supporting patent information.
Google Patents allows you to search and read patents and patent applications from around the world.
PatentScope is provided by the World Intellectual Property Organization (WIPO) and includes access to 52 million national and international patents.
Technical Reports are often produced by government agencies and are frequently made available for free on the web.
Here are some resources to search for technical reports: