Granted Patent
Utility
US 4,300,669 · App. 06/084,497
Cushion finger diaphragm spring clutch
Inventor:
Vance D. Browne
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Oct 15, 1979
Inventor
Vance D. Browne
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.