Granted Patent
Utility
US 4,469,647 · App. 06/478,439
Method and apparatus for mixing, casting and dispensing friction-sensitive pyrotechnic materials
Inventor:
Spencer J. Speer
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Mar 24, 1983
Inventor
Spencer J. Speer
Assignee (at issue)
General Dynamics 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.