Patent Assignment
Reel/Frame 007437/0402
Assignment of Assignor's Interest
Recorded: 1995-04-19
Pages: 3
Assignor
BLACK MAX DOWNHOLE TOOL LTD.
Executed: 1995-03-02
Assignee
CANADIAN DOWNHILL DRILL SYSTEMS INC.
1802 - 4TH STREET, P.O. BOX 602, NISKU, ALBERTA T0C 2G0, CANADA
Covered Property
(1)
Bendable Drilling Sub
Patent:
5,029,654 →
Application:
07/552,987 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 19, 1995
From: SMITH, WINSTON; WILSON, MURRAY
To: BLACK MAX DOWNHOLE TOOL LTD.
Reel/Frame 007288/0424 →
Assignment of Assignor's Interest
Jul 23, 2004
From: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
To: NQL ENERGY SERVICES CANADA LTD.
Reel/Frame 014892/0194 →
Assignment of Assignor's Interest
Apr 30, 2008
From: NQL ENERGY SERVICES CANADA LTD.
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 020876/0333 →