Patent Assignment
Reel/Frame 028193/0394
Assignment of Assignor's Interest
Recorded: 2012-05-11
Pages: 2
Assignor
MARICA, ADRIAN
Executed: 2012-05-10
Assignee
NATIONAL OILWELL VARCO, L.P.
7909 PARKWOOD CIRCLE DRIVE, HOUSTON, TEXAS, 77036
Covered Property
(1)
Valve Having Opposed Curved Sealing Surfaces on a Valve Member and a Valve Seat to Facilitate Effective Sealing