IP Library › Assignment 008167/0447
Patent Assignment
Reel/Frame 008167/0447

Assignment of Assignor's Interest

Recorded: 1996-10-09 Pages: 4
Assignor
Assignees
GRIFFITH OIL TOOL LTD.
3662 - 93 STREET, EDMONT, ALBERTA, T6E 5, CANADA
COMPUTALOG LTD.
9204 - 37 AVENUE, EDMONTON ALBERTA, T6E 5, CANADA
Covered Properties (2)
Adjustable Bent Sub
Patent: 4,745,982 →
Application: 06/935,735 →
Adjustable Bent Sub
Patent: 4,813,497 →
Application: 07/181,648 →
Related Assignments (4)
Other recorded transfers of the patents in this record — the chain of ownership.
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 →
Change of Name Aug 2, 2007
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP INC.
Reel/Frame 019628/0765 →