Granted Patent
Utility
US 6,129,149 · App. 09/001,287
Wellhead connector
Inventor:
Scott K. Beall
Patented Case
View Patent ↗
Granted: Oct 10, 2000
Filed: Dec 31, 1997
Inventor
Scott K. Beall
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.