Index of Trademarks. Sold by Superintendent of Documents. Manual of Classification. A looseleaf book containing a list of all the classes and subclasses of inventions in the Patent and Trademark Office classification systems, a subject matter index, and other information relating to classification. Substitute pages are issued from time to time.
Annual subscription includes the basic manual and substitute pages.
Sold by Superintendent of Documents. Sold by Patent and Trademark Office. Title 37 Code of Federal Regulations. Includes rules of practice for Patents, Trademarks and Copyrights. Available from the Superintendent of Documents.