Granted Patent
Utility
US 5,826,662 · App. 08/792,744
Apparatus for testing and sampling open-hole oil and gas wells
Inventors:
Harold Kent Beck, Paul D. Ringgenberg, Roger L. Schultz, Rodney R. Setliff
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Feb 3, 1997
Inventors
Harold Kent Beck
Paul D. Ringgenberg
Roger L. Schultz
Rodney R. Setliff
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.