Granted Patent
Utility
US 4,368,652 · App. 06/187,694
Friction assemblies for use in planetary transmissions
Inventor:
Willis E. Windish
Patented Case
View Patent ↗
Granted: Jan 18, 1983
Filed: Sep 16, 1980
Inventor
Willis E. Windish
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.