Granted Patent
Utility
US 4,330,140 · App. 06/217,337
Marine riser connector
Inventor:
J. E. Hampton
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Dec 17, 1980
Inventor
J. E. Hampton
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.