Granted Patent
Utility
US 4,781,078 · App. 07/009,831
Locking differential with electromagnetic actuated clutch
Inventors:
Martin Blessing, Charles F. Heine, Richard L. Pifer
Patented Case
View Patent ↗
Granted: Nov 1, 1988
Filed: Feb 2, 1987
Inventors
Martin Blessing
Charles F. Heine
Richard L. Pifer
Assignee (at issue)
DANA LIMITED
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.