Granted Patent
Utility
US 4,637,419 · App. 06/629,206
Subsea control pod valve assembly
Inventor:
David W. Hughes
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Jul 9, 1984
Inventor
David W. Hughes
Assignee (at issue)
Vetco Offshore, 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.