IP Library Assignment 016903/0617
Patent Assignment
Reel/Frame 016903/0617

Assignment of Assignor's Interest

Recorded: 2005-08-19 Pages: 3
Assignor
TROTECHAUD, KEVIN
Executed: 2005-06-17
Assignee
PRECISION DRILLING TECHNOLOGY SERVICES GROUPD, INC.
4200, 150 6YH AVENUE S.W., CALGARY, ALBERTA, T2P 3Y7, CANADA
Covered Property (1)
Perforating Gun Firing Head with Vented Block for Holding Detonator
Patent: 6,918,334 →
Application: 10/827,597 →
Publication: US 2004/0231548
Related Assignments (5)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Name Jul 1, 2005
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017275/0188 →
Change of Name Feb 7, 2006
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017230/0980 →
Change of Name Apr 21, 2006
From: PRECISION DRILLING TECHNOLOGY SERVICES GROUP INC.
To: PRECISION ENERGY SERVICES LTD.
Reel/Frame 017507/0063 →
Assignment of Assignor's Interest Apr 24, 2006
From: PRECISION ENERGY SERVICES LTD.
To: PRECISION ENERGY SERVICES ULC
Reel/Frame 017519/0043 →
Assignment of Assignor's Interest Apr 26, 2006
From: PRECISION ENERGY SERVICES ULC
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 017527/0191 →