Patent Assignment
Reel/Frame 028408/0989
Assignment of Assignor's Interest
Recorded: 2012-06-20
Pages: 8
Assignee
NATIONAL OILWELL VARCO, L.P.
7909 PARKWOOD CIRCLE DRIVE, HOUSTON, TEXAS, 77036
Covered Property
(1)
Drilling Rig System with Self-Elevating Drill Floor
Application:
13/487,186 →
Publication:
US 2012/0304553