Granted Patent
Utility
US 6,347,674 · App. 09/453,996
Electrically sequenced tractor
Inventors:
Duane Bloom, Norman Bruce Moore, Ronald E. Beaufort
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Dec 3, 1999
Inventors
Duane Bloom
Norman Bruce Moore
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.