Granted Patent
Utility
US 6,236,620 · App. 08/757,150
Integrated well drilling and evaluation
Inventors:
Roger L. Schultz, H. Kent Beck, Paul D. Ringgenberg, J. Allan Clark, Kevin R. Manke
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Nov 27, 1996
Inventors
Roger L. Schultz
H. Kent Beck
Paul D. Ringgenberg
J. Allan Clark
Kevin R. Manke
Assignee (at issue)
Halliburton Energy Services, 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.