General information concerning patents
By: U.S. Department of Commerce, Patent and Trademark Office.
Edition: Rev. Dec. 1992.
Publisher: U.S. Dept. of Commerce; For sale by the U.S. G.P.O.
Published: 1992
Place of publication: Washington, D.C
Language: eng
Number of pages: 39
Subjects: Patents -- United States; Patent laws and legislation -- United States