Granted Patent
Utility
US 4,886,560 · App. 07/290,775
Ignition modifying overcoat for deterrent-coated smokeless propellant
Inventor:
Richard V. Cartwright
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Dec 28, 1988
Inventor
Richard V. Cartwright
Assignee (at issue)
HERCULES LLC
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.