I found that my great-grandfather's cousin has two patents issued in the mid-1900s. One for a fish hook remover U.S. Patent 2907134 and one for a feed trough device (2576154). My search was done by entering the words
trautvetter warsaw
in the search box.
Since the town of residence is usually included in the patent it would be an excellent search term to enter in addition to the name, especially for genealogists using this site.
Michael