Granted Patent
Utility
US 4,715,012 · App. 06/191,240
Electronic tractor control
Inventor:
Otto Mueller
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Oct 15, 1980
Inventor
Otto Mueller
Assignee (at issue)
Massey-Ferguson Services, N.V.
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.