Granted Patent
Utility
US 4,711,073 · App. 06/880,204
Clipping propulsion means for tractor mower
Inventors:
Edward Freier, Jr., Daniel Schaefer
Patented Case
View Patent ↗
Granted: Dec 8, 1987
Filed: Jun 30, 1986
Inventors
Edward Freier, Jr.
Daniel Schaefer
Assignee (at issue)
Simplicity Manufacturing, 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.