Granted Patent
Utility
US 4,597,448 · App. 06/546,530
Subsea wellhead system
Inventor:
Benton Frederick Baugh
Patented Case
View Patent ↗
Granted: Jul 1, 1986
Filed: Nov 30, 1983
Inventor
Benton Frederick Baugh
Assignee (at issue)
SMITH INTERNATIONAL, 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.