Granted Patent
Utility
US 6,415,877 · App. 09/353,275
Subsea wellbore drilling system for reducing bottom hole pressure
Inventors:
Roger Fincher, Roland May, Peter Fontana, Larry Watkins, James W. Macfarlane
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Jul 14, 1999
Inventors
Roger Fincher
Roland May
Peter Fontana
Larry Watkins
James W. Macfarlane
Assignee (at issue)
Deep Vision 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.