Granted Patent
Utility
US 4,901,623 · App. 06/667,105
Compensating device for gas actuated firearms
Inventor:
Joseph L. Lee
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Nov 1, 1984
Inventor
Joseph L. Lee
Assignee (at issue)
O.F. MOSSBERG & SONS, 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.