Granted Patent
Utility
US 4,947,700 · App. 07/189,766
Continuously variable transmission system and long travel torsion damper therefor
Inventors:
John M. Kern, Donald Freyburger, Karl F. Schneider, Romas B. Spokas
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: May 3, 1988
Inventors
John M. Kern
Donald Freyburger
Karl F. Schneider
Romas B. Spokas
Assignee (at issue)
Borg-Warner Automotive, 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.