Granted Patent
Utility
US 5,163,692 · App. 07/730,581
One-piece composite lip seal
Inventors:
Alan P. Schofield, Mark A. Krzemien
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Jul 15, 1991
Inventors
Alan P. Schofield
Mark A. Krzemien
Assignee (at issue)
Furon Company
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.