Patent Assignment
Reel/Frame 029213/0853
Assignment of Assignor's Interest
Recorded: 2012-10-30
Pages: 4
Assignee
TESCO CORPORATION
3993 WEST SAM HOUSTON PKWY. NORTH, SUITE 100, HOUSTON, TEXAS, 77043-1211
Covered Property
(1)
Top Drive Powered Differential Speed Rotation System and Method
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.