Granted Patent
Utility
US 4,881,924 · App. 07/255,710
Yoke for Hookes-type universal joint
Inventor:
Ray A. Gall
Patented Case
View Patent ↗
Granted: Nov 21, 1989
Filed: Oct 7, 1988
Inventor
Ray A. Gall
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.