Granted Patent
Utility
US 4,689,939 · App. 06/818,351
Operator presence control for self-propelled implements
Inventor:
Carl E. Seyerle
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Jan 9, 1986
Inventor
Carl E. Seyerle
Assignee (at issue)
Outboard Marine 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.