Granted Patent
Utility
US 6,464,003 · App. 09/777,421
Gripper assembly for downhole tractors
Inventors:
Duane Bloom, Norman Bruce Moore, Rudolph Ernst Krueger, V
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Feb 6, 2001
Inventors
Duane Bloom
Norman Bruce Moore
Rudolph Ernst Krueger, V
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.