text Washington D.C Information Dissemination Organizations, U.S. Dept. of Commerce, Patent and Trademark Office [1996?- monographic Information Dissemination Organizations Some issues have U.S. Patent and Trademark Office at head of title Patents Databases Trademarks Information services Patents Information services Trademarks Databases C 21.30 C 21.30 http://purl.access.gpo.gov/GPO/LPS3569 http://purl.access.gpo.gov/GPO/LPS3569 20160527183601.0 299334