Granted Patent
Utility
US 5,820,132 · App. 08/769,075
Sealing device for rotating shaft
Inventor:
Paul Henri Marnot
Patented Case
View Patent ↗
Granted: Oct 13, 1998
Filed: Dec 16, 1996
Inventor
Paul Henri Marnot
Assignee (at issue)
Eurocopter France
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.