Granted Patent
Utility
US 3,999,643 · App. 05/643,315
Electrical interlock safety control to prevent operation of mower during reverse travel
Inventor:
Kenneth R. Jones
Patented Case
View Patent ↗
Granted: Dec 28, 1976
Filed: Dec 22, 1975
Inventor
Kenneth R. Jones
Assignee (at issue)
Allis-Chalmers Corporation
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.