Granted Patent
Utility
US 6,149,158 · App. 09/107,117
Unitized oil seal with PTFE sealing disk split at radially outer edge and method of manufacture
Inventor:
Bhawani Tripathy
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jun 30, 1998
Inventor
Bhawani Tripathy
Assignee (at issue)
Federal-Mogul Worldwide, Inc.
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.