Granted Patent
Utility
US 5,937,979 · App. 08/840,483
Continuosly variable fan drive clutch
Inventor:
Gordon F. Cummings, III
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Apr 21, 1997
Inventor
Gordon F. Cummings, III
Assignee (at issue)
Rockford Powertrain, 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.