Granted Patent
Utility
US 4,282,775 · App. 06/040,379
Transmission having a two-speed planetary gear set
Inventor:
Jean-Claude Van Dest
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: May 18, 1979
Inventor
Jean-Claude Van Dest
Assignee (at issue)
Massey Ferguson Group 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.