Granted Patent
Utility
US 4,862,960 · App. 07/244,787
Blowout preventer testing apparatus
Inventor:
Keith Garbett
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Sep 15, 1988
Inventor
Keith Garbett
Assignee (at issue)
Cameron Iron Works USA, 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.