Granted Patent
Utility
US 4,359,831 · App. 06/151,427
Reversibly powered rotary snow tiller
Inventor:
Michael G. Beeley
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: May 19, 1980
Inventor
Michael G. Beeley
Assignee (at issue)
De Lorean Manufacturing 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.