Granted Patent
Utility
US 4,575,361 · App. 06/689,231
Universal joint yoke
Inventor:
David L. Thatcher
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Jan 7, 1985
Inventor
David L. Thatcher
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.