Patent Assignment
Reel/Frame 015751/0444
Assignment of Assignor's Interest
Recorded: 2004-08-31
Pages: 5
Assignor
EXTREME ENGINEERING LTD.
Executed: 2004-07-19
Assignee
XACT DOWNHOLE TELEMETRY INC.
BAY 6, 6025 -12TH STREET S.E., CALGARY, AB, T2H 2K1, CANADA
Covered Property
(1)
Apparatus for Receiving Downhole Acoustic Signals
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
May 16, 2003
From: DOPF, ANTHONY R.; CAMWELL, PAUL L.; SIEMENS, WENDALL L.; LOGAN, DEREK W
To: EXTREME ENGINEERING LTD.
Reel/Frame 014069/0593 →
Assignment of Assignor's Interest
Jun 19, 2019
From: XACT DOWNHOLE TELEMETRY INC.
To: BAKER HUGHES CANADA COMPANY
Reel/Frame 049513/0022 →
Assignment of Assignor's Interest
Jun 19, 2019
From: BAKER HUGHES CANADA COMPANY
To: BAKER HUGHES OILFIELD OPERATIONS LLC
Reel/Frame 049519/0660 →
Assignment of Assignor's Interest
Dec 23, 2020
From: XACT DOWNHOLE TELEMETRY LLC
To: BAKER HUGHES OILFIELD OPERATIONS LLC
Reel/Frame 054735/0712 →