Assignment of Assignor's Interest

Recorded: 2009-02-03 Pages: 5

Assignors

TESSARI, ROBERT M.

Executed: 2008-12-12

TATE, BARRY J.

Executed: 2008-12-05

WARREN, TOMMY M.

Executed: 2008-12-09

Assignee

TESCO CORPORATION

6204-6A STREET SE, CALGARY, T2H 2B7, CANADA

Covered Property (1)

Tools and Methods Useful with Wellbore Reverse Circulation

Patent: 8,443,906 →

Application: 12/303,844 →

Publication: US 2010/0206580

Related Assignments (1)

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