Granted Patent
Utility
US 6,729,391 · App. 10/014,782
Insertable progressing cavity pump
Inventors:
David Hill, Jennifer Caroline Sattler, Kevin Kimberley, John L. Hughes
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Dec 14, 2001
Inventors
David Hill
Jennifer Caroline Sattler
Kevin Kimberley
John L. Hughes
Assignee (at issue)
Kudu Industries 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.