Granted Patent
Utility
US 6,454,013 · App. 09/530,301
Expandable downhole tubing
Inventor:
Paul David Metcalfe
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Jun 8, 2000
Inventor
Paul David Metcalfe
Assignee (at issue)
Weatherford/Lamb, 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.