Granted Patent
Utility
US 4,509,773 · App. 06/608,627
Pump-mechanical seal construction with axial adjustment means
Inventor:
Robert S. Wentworth
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: May 9, 1984
Inventor
Robert S. Wentworth
Assignee (at issue)
BorgWarner 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.