Mark Identification

SECURITY DBS

Serial Number

76040824

Filing Date

Apr 29, 2000

Registration Date

May 1, 2001

Trademark by

HALLIBURTON ENERGY SERVICES INC.

Classification Information

Earth boring equipment, namely, drill bits, coring bits, drilling tools and replacement parts therefor

Machinery

Coring services, namely, obtaining core samples from earth formations

Building Construction and Repair

Earth formation evaluation services, namely, downhole monitoring services for monitoring the operation of drill bits, coring bits, drilling tools and drilling equipment

Computer and Scientific