Granted Patent
Utility
US 6,129,529 · App. 09/161,655
Liquid petroleum gas submersible electric motor driven pump and drive coupling therefor
Inventors:
David S. Young, Dale Ewing
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Sep 29, 1998
Inventors
David S. Young
Dale Ewing
Assignee (at issue)
Marley Pump
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.