Granted Patent
Utility
US 6,470,974 · App. 09/549,326
Three-dimensional steering tool for controlled downhole extended-reach directional drilling
Inventors:
N. Bruce Moore, R. Ernst Krueger, Ronald E. Beaufort
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Apr 13, 2000
Inventors
N. Bruce Moore
R. Ernst Krueger
Ronald E. Beaufort
Assignee (at issue)
Western Well Tool, 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.