Patent Assignment
Reel/Frame 055237/0691
Assignment of Assignor's Interest
Recorded: 2021-02-11
Pages: 3
Assignor
DE BOER, LUC
Executed: 2009-11-14
Assignee
DUAL GRADIENT SYSTEMS, LLC
2402 DRS DRIVE, RICHMOND, TEXAS, 77406
Covered Property
(1)
Drill String Flow Control Valves and Methods
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.