Assignment of Assignor's Interest

Recorded: 2011-12-29 Pages: 5

Assignors

CARBAUGH, WILLIAM

Executed: 2011-09-20

CHILDERS, LEONARD G.

Executed: 2011-12-15

LEBLANC, JOHN

Executed: 2010-11-30

Assignee

HYDRIL USA MANUFACTURING LLC

3300 NORTH SAM HOUSTON PARKWAY E., HOUSTON, TEXAS, 77032

Covered Property (1)

Gas Handler, Riser Assembly, and Method

Patent: 8,413,724 →

Application: 12/956,218 →

Publication: US 2012/0132432

Related Assignments (1)

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