Granted Patent
Utility
US 5,113,715 · App. 07/584,927
Gear change mechanism
Inventor:
Roger M. Weyman
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Sep 19, 1990
Inventor
Roger M. Weyman
Assignee (at issue)
Massey-Ferguson Services, N.V.
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.