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Databases

NIST Data Gateway (NIST) [Full Text]

National Institute of Standards and Technology Standard Reference Data covers a broad range of substances and properties from many different scientific disciplines.

US Patent and Trademark Office Search [Full Text]

Covers U.S. Utility, Design and Plant Patents Contents include images for patents since 1790. To view image the user is required to download a non-standard tiff viewer from http://www.uspto.gov/patft/images.htm

Dates of Coverage: 
1790-present

WIPO Patents (WIPO)

Requires users to register for a free account. Search Published PCT (World) Patent Applications. 1997 to April 1998 the database includes citations, abstracts and drawings only. Updated weekly

Dates of Coverage: 
1998-present