Granted Patent
Utility
US 4,680,922 · App. 06/857,281
Mower
Inventor:
William T. Arnold
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Apr 30, 1986
Inventor
William T. Arnold
Assignee (at issue)
Brouwer Turf Equipment Limited
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.