Basic facts about patents.
Contributors: United States. Patent and Trademark Office
Publisher: U.S. Dept. of Commerce, Patent and Trademark Office
Published: 1999
Place of publication: [Washington, D.C.]
Language: eng
Subjects: Patents -- United States.; Patents -- United States -- Library resources.; Trademarks -- United States -- Library resources.
Notes: Cover title.

"Revised March 1999"