Assignment of Assignor's Interest

Recorded: 2014-04-03 Pages: 9

Assignor

TECH-STAR FLUID SYSTEMS INC.

Executed: 2013-11-19

Assignee

CANADIAN ENERGY SERVICES L.P.

1400, 700 - 4TH AVENUE SW, CALGARY, T2P 2X6, CANADA

Covered Property (1)

Drilling Fluid and Methods

Application: 14/244,365 →

Publication: US 2014/0213489

Related Assignments (2)

Other recorded transfers of the patent in this record — the chain of ownership.