Granted Patent
Utility
US 5,860,795 · App. 08/620,941
Method for underground-reservoir fluids production with pump drive contained within the wellbore
Inventors:
Rodney K. Ridley, Mario DeRocco
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Mar 22, 1996
Inventors
Rodney K. Ridley
Mario DeRocco
Assignee (at issue)
Alberta Research Council 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.