General Science & Free Science Resources: Patents

Fetches the pages of a U.S. patent document from the USPTO patent database and converts them into a single PDF file. Not affiliated with Pat2PDF.com which offers a similar service for a fee.

Contains links to the various databases of the Patent and Trademark Office. Provides full-text of patents from 1976 to the present and full-page images for patents starting in 1790. Requires a TIFF plug-in to download page images.

This site provides full text and images of US patents beginning with the patent number 4,000,000.