Mark Identification

WELNAV

Serial Number

75899069

Filing Date

Jan 18, 2000

Registration Date

Jan 29, 2002

Trademark by

WELLBORE NAVIGATION INC.

Classification Information

DIRECTIONAL DRILLING GUIDANCE INSTRUMENTATION, NAMELY UNDERGROUND SINGLE SHOT CAMERAS, UNDERGROUND MULTI-SHOT CAMERAS, UNDERGROUND COMPASSES, UNDERGROUND 1.5 INCH GYROS, UNDERGROUND 2.5 INCH GYROS, UNDERGROUND ANGLE UNITS, UNDERGROUND DATA PROBES, UNDERGROUND TEMPERATURE PROBES, UNDERGROUND GAMMA PROBES, UNDERGROUND MINI STEERING TOOL, UNDERGROUND SINGLE SHOT TIMERS, UNDERGROUND MULTISHOT BATTERY PACKS, COMPUTER SOFTWARE AND HARDWARE FOR CONTROLLING UNDERGROUND DIRECTIONAL GUIDANCE INSTRUMENTS

Electrical and Scientific Apparatus

DIRECTIONAL DRILLING SERVICES NAMELY; UNDERGROUND DRILLING FOR PIPELINES AND CABLES, RENTAL OF DIRECTIONAL DRILLING GUIDANCE EQUIPMENT, REPAIR OF DRILLING SURVEY EQUIPMENT

Building Construction and Repair

MACHINE SHOP SERVICES; NAMELY, MACHINING OF DIRECTIONAL DRILLING GUIDANCE EQUIPMENT PARTS FOR OTHERS

Treatment of Materials

DIRECTIONAL DRILLING GUIDANCE SERVICES; NAMELY, ENGINEERING AND SURVEYING

Computer and Scientific