Granted Patent
Utility
US 6,497,289 · App. 09/454,139
Method of creating a casing in a borehole
Inventors:
Robert Lance Cook, David Paul Brisco, R. Bruce Stewart, Lev Ring, Richard Carl Haut, Robert Donald Mack
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Dec 3, 1999
Inventors
Robert Lance Cook
David Paul Brisco
R. Bruce Stewart
Lev Ring
Richard Carl Haut
Robert Donald Mack
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.