Granted Patent
Utility
US 4,524,641 · App. 06/436,052
Continuously-variable ratio-transmission
Inventor:
Christopher John Greenwood
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Oct 22, 1982
Inventor
Christopher John Greenwood
Assignee (at issue)
Leyland Vehicles Limited
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.