Granted Patent
Utility
US 5,911,173 · App. 08/735,077
Breech bolt assembly for a firearm
Inventor:
Mark A. Westrom
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Oct 18, 1996
Inventor
Mark A. Westrom
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.