Assignment of Assignor's Interest

Recorded: 2003-02-25 Received: 2003-02-27 Pages: 3

Assignor

UNITRACK SERVICES, L.P.

Executed: 2003-02-14

Assignee

KEY ENERGY SERVICES, INC.

6 DESTA DRIVE, STE. 4400, MIDLAND, TX, 79705, UNITED STATES

Covered Properties (10)

Engine Speed Limiter for a Hoist

Application: 10/263,630 →

Servicing System for Wells

Application: 10/113,609 →

Tongs Monitor with Learning Mode

Application: 10/046,688 →

Method of Monitoring Pumping Operations of a Service Vehicle at a Well Site

Application: 09/945,924 →

Method of managing workers at a well site

Application: 09/839,411 →

Method of Managing a Well File Record at a Well Site

Application: 09/839,444 →

Method of Monitoring Operations of Multiple Service Vehicles at a Well Site

Application: 09/838,857 →

Method of managing work orders at a well site

Application: 09/839,080 →

Method of managing billing information at a well site

Application: 09/839,103 →

Sucker Rod Tool

Application: 09/768,551 →