Granted Patent
Utility
US 4,691,442 · App. 06/847,698
Sight system for a firearm
Inventor:
Warren A. Center
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Apr 2, 1986
Inventor
Warren A. Center
Assignee (at issue)
K. W. Thompson Tool Company, Inc.
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.