Granted Patent
Utility
US 4,375,253 · App. 06/190,131
Deflection limiting stop for a diaphragm spring clutch
Inventor:
Philip J. Mott
Patented Case
View Patent ↗
Granted: Mar 1, 1983
Filed: Sep 24, 1980
Inventor
Philip J. Mott
Assignee (at issue)
BorgWarner Inc.
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.