Granted Patent
Utility
US 4,572,015 · App. 06/596,495
Nutating traction drive transmission
Inventor:
Yves J. Kemper
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Apr 4, 1984
Inventor
Yves J. Kemper
Assignee (at issue)
Caterpillar Tractor Co.
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.