Granted Patent
Utility
US 6,722,443 · App. 09/762,410
Connector for expandable well screen
Inventor:
Paul David Metcalfe
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: May 17, 2001
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.