Granted Patent
Utility
US 4,907,511 · App. 06/639,647
Liquid propellant gun
Inventor:
Melvin J. Bulman
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Jun 4, 1984
Inventor
Melvin J. Bulman
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.