Granted Patent
Utility
US 5,797,602 · App. 08/728,998
Mechanical seal for water pump of heavy duty vehicle
Inventor:
Steven C. Less
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Oct 10, 1996
Inventor
Steven C. Less
Assignee (at issue)
Pac-Seal Inc. International
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.