Granted Patent
Utility
US 4,371,291 · App. 06/158,933
Underwater flowline connector
Inventors:
Charles D. Morrill, John M. Des Lierres, Louis E. Copeland
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Jun 12, 1980
Inventors
Charles D. Morrill
John M. Des Lierres
Louis E. Copeland
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.