Assignment of Assignor's Interest

Recorded: 2006-12-18 Pages: 5

Assignor

RICHARDSON, ALLAN S.

Executed: 2006-12-13

Assignee

CANRIG DRILLING TECHNOLOGY, LTD.

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

Covered Property (1)

Quill Saver Sub

Patent: 7,543,650 →

Application: 11/405,940 →

Publication: US 2007/0074874

Related Assignments (1)

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