IP Library › Assignment 063032/0535
Patent Assignment
Reel/Frame 063032/0535

Merger

Recorded: 2023-03-20 Pages: 5
Assignor
GRANT PRIDECO, L.P.
Executed: 2021-12-31
Assignee
NATIONAL OILWELL VARCO, L.P.
7909 PARKWOOD CIRCLE DRIVE, HOUSTON, TEXAS, 77036
Covered Property (1)
Acoustic Transducer Calibration Block and Method
Patent: 7,578,166 →
Application: 12/013,583 →
Publication: US 2009/0178466
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jan 21, 2008
From: ETHRIDGE, ROGER E.; MANDINA, DAVID A.; O'NEAL, CHRISTOPHER S.; KAMENJASEVIC, DARKO
To: GRANT PRIDECO, L.P.
Reel/Frame 020391/0332 →