Patent Assignment
Reel/Frame 004542/0491
Assignment of Assignors Interest.
Recorded: 1986-03-06
Pages: 1
Assignor
MACLEOD, NORMAN C.
Executed: 1986-01-07
Assignee
MACLEOD LABORTORIES INCORPORATED, A CORP OF CALIFORNIA
651 RIVER OAKS PARKWAY, SAN JOSE, CALIFORNIA, 95134
Covered Property
(1)
Apparatus and Method for Down-Hole Em Telemetry While Drilling
Patent:
4,739,325 →
Application:
06/838,639 →
Related Assignments
(8)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Jan 27, 1992
From: MACLEOD LABORATORIES, INC., A CA CORPORATION
To: PROTECHNICS RESERVOIR SERVICES, INC. A NV CORPORATION
Reel/Frame 005988/0650 →
Assignment of Assignor's Interest
Feb 11, 1999
From: PROTECHNICS RESERVOIR SERVICES, INC.
To: CORE LABORATORIES, INC.
Reel/Frame 009748/0654 →
Assignment of Assignor's Interest
Mar 5, 2001
From: CORE LABORATORIES, INC.
To: NORTHSTAR DRILLING SYSTEMS, INC.
Reel/Frame 011874/0335 →
Appointment of Agent
Oct 29, 2001
From: OWNER, NORTHSTAR DRILLING SYSTEMS INC.
To: LAMBERT, ANTHONY R.
Reel/Frame 012287/0206 →
Security Interest
Sep 12, 2003
From: NORTHSTAR DRILLING SYSTEMS INC.
To: CANADIAN IMPERIAL BANK OF COMMERCE
Reel/Frame 014506/0431 →
Release of Security Interest
Mar 18, 2004
From: CANADIAN IMPERIAL BANK OF COMMERCE
To: NORTHSTAR DRILLING SYSTEMS INC.
Reel/Frame 015116/0519 →
Transfer of Title
Jul 23, 2004
From: NORTHSTAR DRILLING SYSTEMS INC.
To: NQL ENERGY SERVICES CANADA LTD.
Reel/Frame 014892/0200 →
Assignment of Assignor's Interest
Apr 30, 2008
From: NQL ENERGY SERVICES CANADA LTD.
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 020876/0333 →