Patent Assignment
Reel/Frame 066551/0001
Merger
Recorded: 2024-01-24
Pages: 24
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Assignor
DRECO ENERGY SERVICES ULC
Executed: 2021-01-01
Assignee
NOV CANADA ULC
4300 BANKERS HALL WEST, 888 - 3RD STREET S.W., CALGARY, ALBERTA, T2P 5C5, CANADA
Covered Properties
(3)
Method and Apparatus for Controlling Downhole Rotational Rate of a Drilling Tool
Method and Apparatus for Controlling Downhole Rotational Rate of a Drilling Tool
Method and Apparatus for Controlling Downhole Rotational Rate of a Drilling Tool
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 20, 2010
From: PRILL, JONATHAN RYAN; MARCHAND, NICHOLAS RYAN; JOHNS, RALPH WILLIAM GRAEME
To: DRECO ENERGY SERVICES, LTD.
Reel/Frame 025166/0886 →
Assignment of Assignor's Interest
May 18, 2015
From: PRILL, JONATHAN RYAN; MARCHAND, NICHOLAS RYAN; JOHNS, RALPH WILLIAM GRAEME
To: DRECO ENERGY SERVICES ULC
Reel/Frame 035706/0400 →
Change of Name
Jan 8, 2016
From: DRECO ENERGY SERVICES LTD.
To: DRECO ENERGY SERVICES ULC
Reel/Frame 037441/0970 →
Assignment of Assignor's Interest
Jan 8, 2016
From: PRILL, JONATHAN RYAN; MARCHAND, NICHOLAS RYAN; JOHNS, RALPH WILLIAM GRAEME
To: DRECO ENERGY SERVICES LTD.
Reel/Frame 037442/0867 →
Change of Name
Jan 8, 2016
From: DRECO ENERGY SERVICES LTD.
To: DRECO ENERGY SERVICES ULC
Reel/Frame 037471/0031 →