Granted Patent
Utility
US 5,074,611 · App. 07/633,022
Door assembly for armored car
Inventor:
Donald R. Newkirk
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Dec 24, 1990
Inventor
Donald R. Newkirk
Assignee (at issue)
O'Gara-Hess & Eisenhardt Armoring Co.
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.