Security Agreement

Recorded: 2007-03-12 Received: 2007-03-12 Pages: 3

Assignor

TIETEK, LLC

Executed: 2007-03-09

Assignee

OPUS 5949, LLC

5949 SHERRY LANE, SUITE 1900, DALLAS, TX, 75225, UNITED STATES

Covered Properties (2)

Vibration Testing Device and Vibration Response Evaluating Method

Application: 10/244,746 →

Railroad Tie and Method for Making Same

Application: 09/800,171 →