Inventor

JOHNSON READY J

US3 patents

Patents

3 patents

US6457529B2Oct 1, 2002

Apparatus and method for returning drilling fluid from a subsea wellbore

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US6896076B2May 24, 2005

Rotating drilling head gripper

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US6734805B2May 11, 2004

Composite pipe telemetry conduit

VETCO GRAY INC ABB37 citations89