Granted Patent
Utility
US 6,547,016 · App. 09/734,983
Apparatus for measuring weight and torque on drill bit operating in a well
Inventor:
Mark Ellsworth Wassell
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Dec 12, 2000
Inventor
Mark Ellsworth Wassell
Assignee (at issue)
APS Technology, LLC
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.