Granted Patent
Utility
US 4,341,147 · App. 06/158,939
Coaxial dual hollow piston regenerative liquid propellant gun
Inventor:
Robert E. Mayer
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Jun 16, 1980
Inventor
Robert E. Mayer
Assignee (at issue)
General Electric 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.