Granted Patent
Utility
US 5,892,460 · App. 08/812,216
Logging while drilling tool with azimuthal sensistivity
Inventors:
Al Jerabek, Roland E. Chemali
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Mar 6, 1997
Inventors
Al Jerabek
Roland E. Chemali
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.