Granted Patent
Utility
US 4,425,620 · App. 06/229,132
Electrical control for power shift transmission
Inventors:
Barry D. Batcheller, William E. Martinson
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Jan 28, 1981
Inventors
Barry D. Batcheller
William E. Martinson
Assignee (at issue)
Steiger Tractor, Inc.
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.