Granted Patent
Utility
US 4,337,628 · App. 06/179,928
Universal joint with unitary face seal and retainer assembly
Inventor:
C. Roger Greene
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Aug 20, 1980
Inventor
C. Roger Greene
Assignee (at issue)
BorgWarner Inc.
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.