Granted Patent
Utility
US 6,834,862 · App. 10/055,542
Shaft sealing system for a rotary mechanical device
Inventor:
Mark R. Wilkinson
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Jan 23, 2002
Inventor
Mark R. Wilkinson
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.