Trademarks: Searching for Historical U.S. Trademarks
Guide to understanding what a trademark is, the different types of trademarks, searching for United States registered trademarks and how to apply for one
Trademarks were first registered separately beginning in 1870 by the U.S. Commissioner of Patents and were published in an annual listing of trademark registrants within the Annual Report of the Commissioner of Patents.
The years 1843-1871 and 1876-1973 of the Annual Report can also be accessed directly in the HathiTrust Digital Library.