Granted Patent
Utility
US 4,366,756 · App. 06/185,410
Electronic tractor guidance system
Inventor:
Jerry W. Brum
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Sep 9, 1980
Inventor
Jerry W. Brum
Assignee (at issue)
Geosource, 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.