Granted Patent
Utility
US 4,246,992 · App. 05/876,581
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: Jan 27, 1981
Filed: Feb 9, 1978
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.