Granted Patent
Utility
US 4,403,432 · App. 06/467,400
Trailer hitch snow plow
Inventor:
Michael P. Biance
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: Feb 17, 1983
Inventor
Michael P. Biance
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.