Patent Assignment
Reel/Frame 037442/0867
Assignment of Assignor's Interest
Recorded: 2016-01-08
Pages: 4
Assignors
PRILL, JONATHAN RYAN
Executed: 2008-04-18
MARCHAND, NICHOLAS RYAN
Executed: 2008-04-18
JOHNS, RALPH WILLIAM GRAEME
Executed: 2008-04-18
Assignee
DRECO ENERGY SERVICES LTD.
3660 - 93RD STREET, EDMONTON, ALBERTA, T6E 5N3, CANADA
Covered Property
(1)
Method and Apparatus for Controlling Downhole Rotational Rate of a Drilling Tool
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.