Granted Patent
Utility
US 6,287,074 · App. 08/831,450
Mechanical seal for shafts and axles
Inventor:
Dennis Chancellor
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Mar 31, 1997
Inventor
Dennis Chancellor
Assignee (at issue)
NATE 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.