Granted Patent
Utility
US 4,950,342 · App. 07/402,323
Polycaprolactone-deterred nitrocellulose propellant compositions and method
Inventor:
J. B. Canterberry
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Sep 5, 1989
Inventor
J. B. Canterberry
Assignee (at issue)
Olin Corporation
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.