Patent Assignment
Reel/Frame 028995/0584
Change of Name
Recorded: 2012-09-17
Pages: 4
Assignor
PRECISION DRILLING TECHNOLOGY SERVICES GROUP INC.
Executed: 2005-04-04
Assignee
PRECISION ENERGY SERVICES LTD.
4500, 150-6TH AVENUE S.W., CALGARY, T2P 3Y7, CANADA
Covered Property
(1)
Compensated Ensemble Crystal Oscillator for Use in a Well Borehole System
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Sep 17, 2012
From: SORRELLS, MARTIN; MINTO, JAMES
To: PRECISION DRILLING TECHNOLOGIES SERVICE GROUP INC.
Reel/Frame 028969/0229 →
Assignment of Assignor's Interest
Sep 17, 2012
From: PRECISION ENERGY SERVICES LTD
To: PRECISION ENERGY SERVICES ULC
Reel/Frame 028970/0678 →
Assignment of Assignor's Interest
Sep 17, 2012
From: PRECISION ENERGY SERVICES ULC
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 028970/0884 →