Granted Patent
Utility
US 6,325,159 · App. 09/276,404
Offshore drilling system
Inventors:
Charles P. Peterman, Riley G. Goldsmith, Keith C. Mott, John Danna, Kenneth L. Pelata, Kenneth W. Colvin
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Mar 25, 1999
Inventors
Charles P. Peterman
Riley G. Goldsmith
Keith C. Mott
John Danna
Kenneth L. Pelata
Kenneth W. Colvin
Assignee (at issue)
Hydril Company
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.