Granted Patent
Utility
US 4,354,692 · App. 06/104,221
Heavy duty drawbar
Inventor:
Stephen G. Shoup
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Dec 17, 1979
Inventor
Stephen G. Shoup
Assignee (at issue)
Caterpillar Tractor Co.
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.