Granted Patent
Utility
US 6,726,212 · App. 10/173,250
Retrofittable severe duty seal for a shaft
Inventor:
Michael R. Oldenburg
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Jun 17, 2002
Inventor
Michael R. Oldenburg
Assignee (at issue)
Transcom, 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.