Granted Patent
Utility
US 4,472,158 · App. 06/382,036
Heavy duty yoke
Inventor:
Robert G. Joyner
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: May 26, 1982
Inventor
Robert G. Joyner
Assignee (at issue)
DANA 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.