Patent Assignment
Reel/Frame 029813/0984
Assignment of Assignor's Interest
Recorded: 2013-02-14
Pages: 3
Assignor
SCHROEDER, DERRYL
Executed: 2012-10-29
Assignee
HYDRIL USA MANUFACTURING LLC
3300 NORTH SAM HOUSTON PARKWAY EAST, HOUSTON, TEXAS, 77032
Covered Property
(1)
Drill String Valve and Method
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.