Granted Patent
Utility
US 4,817,321 · App. 07/147,820
Multipurpose tool for a muzzle loading cap lock firearm
Inventor:
John L. Clement
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Jan 22, 1980
Inventor
John L. Clement
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.