U.S. Patent Database
Also known as: US Patents | USPTO
The USPTO's patent databases contain more than 9 million patents issued from 1790 to the present and 3 million published applications from 2001 forward.
The Official Gazette of the U.S. Patent and Trademark Office (1872-1994) is located in Stauffer Library Documents, call # US1 DE O23.
- 1790 - present (updated weekly)