Granted Patent
Utility
US 5,872,323 · App. 08/905,147
Gas operated firearm piston/piston seal assembly
Inventors:
Vincent Norton, Derek Lee Watkins
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Aug 1, 1997
Inventors
Vincent Norton
Derek Lee Watkins
Assignee (at issue)
Remington Arms Company, LLC
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.