Granted Patent
Utility
US 6,474,416 · App. 09/757,870
Remotely installed pressure containing closure
Inventors:
Scott K. Beall, Roy M. Ortiz
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Jan 10, 2001
Inventors
Scott K. Beall
Roy M. Ortiz
Assignee (at issue)
Kvaerner Oilfield Products A.S.
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.