Granted Patent
Utility
US 4,219,901 · App. 05/974,367
Riding sweeper
Inventors:
Jack L. Burgoon, Christopher M. Knowlton
Patented Case
View Patent ↗
Granted: Sep 2, 1980
Filed: Dec 29, 1978
Inventors
Jack L. Burgoon
Christopher M. Knowlton
Assignee (at issue)
The Scott Fetzer Company
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.