Granted Patent
Utility
US 4,496,922 · App. 06/557,872
Electromagnetically released coupling
Inventor:
James A. Pardee
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Dec 5, 1983
Inventor
James A. Pardee
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.