Granted Patent
Utility
US 6,247,702 · App. 09/314,801
Bearing shaft seal
Inventors:
Norman R. Long, Dennis L. Bush
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: May 19, 1999
Inventors
Norman R. Long
Dennis L. Bush
Assignee (at issue)
A. O. Smith Corporation
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.