Granted Patent
Utility
US 4,504,067 · App. 06/615,159
High pressure shaft seal with low-friction lip liner
Inventor:
Douglas A. Cather, Jr.
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: May 30, 1984
Inventor
Douglas A. Cather, Jr.
Assignee (at issue)
Garlock, 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.