Granted Patent
Utility
US 4,317,580 · App. 06/143,660
Hitch adapter
Inventors:
Thomas J. Scarnato, Manfried L. Hoch, Robert C. Miner
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Apr 25, 1980
Inventors
Thomas J. Scarnato
Manfried L. Hoch
Robert C. Miner
Assignee (at issue)
International Harvester Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.