Patent search sites

Two patent searching sites for any lists of science, law or business resources:

SumoBrain
FreePatentsOnline

Both of the sites are totally free, with powerful search engines, large document collections, and many features that other sites lack, including PDF downloading.

Comments

Mary Beth said…
See also http://www.google.com/patents?hl=en
Google Patent Search covers the entire collection of issued patents and millions of patent applications made available by the USPTO from patents issued in the 1790s through those most recently issued in the past few months. You can search the full text of U.S. patents from the Google Patent Search homepage: http://www.google.com/patents

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