Patent Assignment
Reel/Frame 058239/0731
Assignment of Assignor's Interest
Recorded: 2021-11-30
Pages: 4
Assignor
NATIONAL OILWELL VARCO, L.P.
Executed: 2018-02-01
Assignee
NATIONAL OILWELL DHT, L.P.
500 CONROE PARK WEST DRIVE, CONROE, TEXAS, 77303
Covered Property
(1)
Methods for Increasing the Amplitude of Reciprocal Extensions and Contractions of a Shock Tool for Drilling Operations
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 30, 2021
From: DONALD, SEAN MATTHEW; SCOTT, ANDREW LAWRENCE; YANG, YONG; KVASNYTSIA, ROMAN
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 058239/0676 →
Change of Name
Jun 22, 2023
From: NATIONAL OILWELL DHT, L.P.
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 064057/0370 →