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| Patents |
- US Patent and Trademark Office Web Patent Databases
Full-page images of all US patents issued since 1790, plus fully-searchable full-text of all US patents issued since 1976. Also US patent applications since 15 March 2001.
- DEPATISnet Information
Search US:1973+, EP:1978+, WO:1978+. DE:1973+, DD:1973+, AT:1973+, CH:1973+, FR:1973+, GB:1973+, and JP:1973+ patents and applications. Some links to full-text.
- European Patent Office
- Free Patents Online
U.S. patents, 1976 to date, as PDF files, all pages in one file.
- Japan Patent Office
Includes English machine-translations of some Japanese patents. Read help screens.
- Patent Fetcher
All U.S. patents and some foreign patents, as PDF files, all pages in one file.
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