Patents may be searched in the USPTO Patent Full-Text and Image Database (PatFT). The USPTO houses full text for patents issued from 1976 to the present and PDF images for all patents from 1790 to the present. General Information Concerning Patents
Worldwide patent database. Abstracts, bibliographic data and full text of patents are provided for: EPO, France, Germany, Switzerland, United Kingdom, United States, Japan, China and WIPO; provides patent families; more than 80 million patent documents.
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