Granted Patent
Utility
US 4,683,775 · App. 06/806,306
Differential axle speed sensing mechanism
Inventors:
Gregory J. Hilker, Edward A. Tieman
Patented Case
View Patent ↗
Granted: Aug 4, 1987
Filed: Dec 9, 1985
Inventors
Gregory J. Hilker
Edward A. Tieman
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.