Granted Patent
Utility
US 4,891,999 · App. 07/246,426
Shift control system for a hydromechanical tractor transmission
Inventor:
Leonard A. Scott
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Sep 19, 1988
Inventor
Leonard A. Scott
Assignee (at issue)
J. I. Case 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.