Granted Patent
Utility
US 6,728,639 · App. 09/931,332
Method and apparatus for determining the orientation of a borehole
Inventor:
Michael K. Russell
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Aug 16, 2001
Inventor
Michael K. Russell
Assignee (at issue)
Smart Stabilizer Systems Limited
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.