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Search U.S. Patents through QPAT-US from Questel/Orbit
Search U.S. Patents through QPAT-US from Questel/Orbit
full text of all U.S. patents issued since Jan. 1, 1974 (over 1.8 million records!). Also offers full page images of over 99% of the patents covered in the full text database. -- pay system although some parts are free. Access to the abstracts database is free if you register.
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