Granted Patent
Utility
US 4,304,412 · App. 06/090,778
Contoured double-lip bearing seal
Inventor:
Eli M. Ladin
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Nov 2, 1979
Inventor
Eli M. Ladin
Assignee (at issue)
Federal-Mogul LLC
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.