Granted Patent
Utility
US 5,774,420 · App. 08/515,985
Method and apparatus for retrieving logging data from a downhole logging tool
Inventors:
Dale R. Heysse, Al Jerabek
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Aug 16, 1995
Inventors
Dale R. Heysse
Al Jerabek
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.