Granted Patent
Utility
US 4,876,920 · App. 07/216,065
Dual range infinitely variable transmission
Inventor:
Peter Eichenberger
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jul 7, 1988
Inventor
Peter Eichenberger
Assignee (at issue)
Ford Motor Company
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.