Granted Patent
Utility
US 4,643,477 · App. 06/832,871
Demountable windshield armor for vehicles
Inventor:
Stephen C. Kovatch
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Feb 26, 1986
Inventor
Stephen C. Kovatch
Assignee (at issue)
Hess & Eisenhardt Armoring 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.