Granted Patent
Utility
US 4,384,725 · App. 06/381,845
Liquid lubricant seal with oleophobic coating
Inventor:
Neno T. Nenov
Patented Case
View Patent ↗
Granted: May 24, 1983
Filed: May 24, 1982
Inventor
Neno T. Nenov
Assignee (at issue)
Union Carbide Corporation
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.