Granted Patent
Utility
US 6,379,127 · App. 09/676,579
Submersible motor with shaft seals
Inventors:
Dale B. Andrews, D. Paul Russell, Michael Witzgall
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Sep 29, 2000
Inventors
Dale B. Andrews
D. Paul Russell
Michael Witzgall
Assignee (at issue)
Lawrence Pump 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.