Granted Patent
Utility
US 4,615,544 · App. 06/348,735
Subsea wellhead system
Inventor:
Benton Frederick Baugh
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Feb 16, 1982
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.