Granted Patent
Utility
US 4,409,954 · App. 06/259,798
Modular gas cartridge
Inventors:
Lee J. Berlik, S. Thomas Barnes
Patented Case
View Patent ↗
Granted: Oct 18, 1983
Filed: May 4, 1981
Inventors
Lee J. Berlik
S. Thomas Barnes
Assignee (at issue)
Raytheon Company
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.