Granted Patent
Utility
US 4,307,796 · App. 06/029,788
Vehicle steering brake and clutch control
Inventors:
Gary A. Hakes, Norma G. Shook, George W. Cackley, Stephen D. Burdette, Hugh C. Morris
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Apr 13, 1979
Inventors
Gary A. Hakes
Norma G. Shook
George W. Cackley
Stephen D. Burdette
Hugh C. Morris
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.