Granted Patent
Utility
US 4,493,407 · App. 06/330,651
Armature assembly for an electromagnetic clutch
Inventor:
Paul P. Newton
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: Dec 14, 1981
Inventor
Paul P. Newton
Assignee (at issue)
Warner Electric Brake & Clutch Company
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.