Granted Patent
Utility
US 4,641,567 · App. 06/499,206
Barrel assembly for electromagnetic rail gun
Inventor:
Richard L. Creedon
Patented Case
View Patent ↗
Granted: Feb 10, 1987
Filed: May 31, 1983
Inventor
Richard L. Creedon
Assignee (at issue)
GA Technologies, 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.