Granted Patent
Utility
US 5,149,384 · App. 07/489,288
Propellant material
Inventor:
Frank A. Marion
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Mar 5, 1990
Inventor
Frank A. Marion
Assignee (at issue)
UNIVERSAL PROPULSION COMPANY, INC.
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.