United States Patent and Trademark Office
Description:
Provides full-text access to patents and trademarks granted since 1976 (full-page images since 1790), as well as patent applications received by the office. Subjects covered include biology, business, chemistry, engineering, optometry, pharmacy, sciences, technology.
Content Types:
Patents and Trademarks
Dates of Coverage:
1790-
Resource Type:
Index
Producer:
United States Patent and Trademark Office
Access Restrictions:
Open access.