Granted Patent
Utility
US 4,643,073 · App. 06/633,217
Muzzle stabilization arrangement for firearms
Inventor:
Harold E. Johnson
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jul 23, 1984
Inventor
Harold E. Johnson
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.