Granted Patent
Utility
US 6,672,391 · App. 10/408,734
Subsea well production facility
Inventors:
Clay F. Anderson, John Timothy Allen
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Apr 7, 2003
Inventors
Clay F. Anderson
John Timothy Allen
Assignee (at issue)
ABB Offshore Systems Limited
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.