Granted Patent
Utility
US 6,257,986 · App. 09/476,477
End yoke for a universal joint assembly
Inventors:
James A. Duggan, Robert G. Joyner
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Dec 30, 1999
Inventors
James A. Duggan
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.