Granted Patent
Utility
US 4,281,328 · App. 06/116,340
Slip ring assembly
Inventor:
Marvin W. Shores
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Jan 28, 1980
Inventor
Marvin W. Shores
Assignee (at issue)
General Dynamics Corp., Pomona Division
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.