Patent Assignment
Reel/Frame 058838/0015
Merger
Recorded: 2021-11-11
Pages: 24
Assignor
DRECO ENERGY SERVICES ULC
Executed: 2021-01-01
Assignee
NOV CANADA ULC
4300 BANKERS HALL WEST, 888 - 3RD STREET S.W., CALGARY, ALBERTA, T2P 5C5, CANADA
Covered Property
(1)
Systems, Apparatuses, and Methods for Treating Drilling Fluid
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 24, 2019
From: ZAZULA, RENNIE K.; BIRD, DEAN M.; CROSSWHITE, DONALD T.
To: NATIONAL OILWELL VARCO CANADA ULC
Reel/Frame 048120/0100 →
Corrective Assignment to Correct the Assignee's Name Previously Recorded at Reel: 048120 Frame: 0100. Assignor(S) Hereby Confirms the Assignment.
Nov 17, 2020
From: ZAZULA, RENNIE K.; BIRD, DEAN M.; CROSSWHITE, DONALD T.
To: VARCO CANADA ULC
Reel/Frame 054451/0314 →
Merger
Nov 11, 2021
From: VARCO CANADA ULC
To: NOV CANADA ULC
Reel/Frame 058518/0106 →