Granted Patent
Utility
US 6,470,968 · App. 09/679,901
Independently retrievable subsea tree and tubing hanger system
Inventor:
Edwin C. Turner
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Oct 5, 2000
Inventor
Edwin C. Turner
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.