Assignment of Assignor's Interest

Recorded: 2008-05-22 Pages: 7

Assignors

ERIKSEN, ERIK P., MR.

Executed: 2008-05-16

MOFFITT, MICHAEL E., MR.

Executed: 2008-05-16

WARREN, TOMMY M., MR.

Executed: 2008-05-14

Assignee

TESCO CORPORATION (US)

3993 W. SAM HOUSTON PARKWAY N., SUITE 100, HOUSTON, TEXAS, 77043

Covered Property (1)

Incremental U-Tube Process to Retrieve of Bottom Hole Assembly During Casing While Drilling Operations

Patent: 7,604,057 →

Application: 12/125,808 →

Related Assignments (1)

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