Granted Patent
Utility
US 6,684,947 · App. 10/078,928
Apparatus for radially expanding a tubular member
Inventors:
Robert Lance Cook, David Paul Brisco, Lev Ring, Michael Bullock
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Feb 20, 2002
Inventors
Robert Lance Cook
David Paul Brisco
Lev Ring
Michael Bullock
Assignee (at issue)
SHELL OIL COMPANY
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.