Granted Patent
Utility
US 6,401,827 · App. 09/684,187
Tubing hanger running tool
Inventors:
Bobby L. Ferguson, Jose A. Alvarado, Charles D. Bridges, Eugene Borak, Vicki Corso
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Oct 6, 2000
Inventors
Bobby L. Ferguson
Jose A. Alvarado
Charles D. Bridges
Eugene Borak
Vicki Corso
Assignee (at issue)
ABB Vetco Gray 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.