Granted Patent
Utility
US 4,534,707 · App. 06/609,675
Hydrostatic vehicle control
Inventor:
Randall M. Mitchell
Patented Case
View Patent ↗
Granted: Aug 13, 1985
Filed: May 14, 1984
Inventor
Randall M. Mitchell
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.