Granted Patent
Utility
US 4,907,486 · App. 05/840,104
Liquid propellant gun
Inventor:
Robert E. Mayer
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Oct 6, 1977
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.