Granted Patent
Utility
US 4,967,385 · App. 07/389,392
Electronic control system for powershift transmission
Inventors:
Kevin L. Brekkestran, John C. Thomas
Patented Case
View Patent ↗
Granted: Oct 30, 1990
Filed: Aug 3, 1989
Inventors
Kevin L. Brekkestran
John C. Thomas
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.