Assignment of Assignor's Interest

Recorded: 2008-04-07 Pages: 5

Assignors

DRUMHELLER, DOUGLAS S.

Executed: 2007-12-12

CAMWELL, PAUL L

Executed: 2007-12-12

DOPF, ANTHONY R.

Executed: 2007-12-12

LOGAN, DEREK W.

Executed: 2007-12-12

Assignee

XACT DOWNHOLE TELEMETRY INC.

BAY 14, 5925-12TH STREET S.E., CALGARY, ALBERTA, T2H 2M3, CANADA

Covered Property (1)

Acoustic isolator

Application: 11/606,818 →

Publication: US 2007/0153629

Related Assignments (1)

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