Assignment of Assignor's Interest

Recorded: 2005-02-10 Pages: 3

Assignor

RICHARDSON, ALLAN S.

Executed: 2002-08-12

Assignee

CANRIG DRILLING TECHNOLOGY, LTD.

14703 F.M. 1488, MAGNOLIA, TEXAS, 77354

Covered Property (1)

Valve Actuator

Patent: 6,840,493 →

Application: 10/114,822 →

Publication: US 2003/0189184

Related Assignments (1)

Other recorded transfers of the patent in this record — the chain of ownership.