Granted Patent
Utility
US 4,703,939 · App. 06/753,830
Mechanical seal with radially disposed bias component
Inventor:
Robert S. Wentworth
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Jul 11, 1985
Inventor
Robert S. Wentworth
Assignee (at issue)
Borg-Warner Industrial Products, 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.