Granted Patent
Utility
US 4,887,846 · App. 07/184,665
Subsea tubular joint
Inventors:
Arthur H. T. Chin, William M. Taylor
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Apr 22, 1988
Inventors
Arthur H. T. Chin
William M. Taylor
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.