Granted Patent
Utility
US 6,779,613 · App. 10/266,534
Drill bits with controlled exposure of cutters
Inventors:
Mark W. Dykstra, William Heuser, Michael L. Doster, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts, Daniel E. Ruff, Rodney B. Walzel, Christopher C. Beuershausen
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Oct 7, 2002
Inventors
Mark W. Dykstra
William Heuser
Michael L. Doster
Theodore E. Zaleski, Jr.
Jack T. Oldham
Terry D. Watts
Daniel E. Ruff
Rodney B. Walzel
Christopher C. Beuershausen
Assignee (at issue)
Baker Hughes Holdings 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.