Granted Patent
Utility
US 5,553,870 · App. 08/195,699
Lip seal separating oil and grease
Inventors:
Edward S. Czekansky, Dennis L. Otto
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Feb 16, 1994
Inventors
Edward S. Czekansky
Dennis L. Otto
Assignee (at issue)
THE TIMKEN 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.