SEISMOGRAPH SERVICE CORPORATION

BIRDWELL

TREATING OF WELLS-NAMELY, PERFORATING WELL BORES, AND CHEMICALLY TREATING WELL BORES;

BIRDWELL

MAKING GEOPHYSICAL SURVEYS-NAMELY, DETERMINING AND LOGGING THE TEMPERATURE, SIZE VARIATIONS, DEVIATION, DIRECTION AND RATE OF FLOW OF FLUIDS AND ELECTRICAL PROPERTIES OF WELL BORES INCLUDING GAMMA RAY, NEUTRON AND RADIOACTIVE TRACER LOGGING, AND PHOTOGRAPHING WELL BORES;

FLO-PAK

WELL LOGGING SERVICES;

HALO-HAT

RADIO COMMUNICATION EQUIPMENT-NAMELY, HELMETS OR HATS INCLUDING ANTENNAS FOR USE THEREON;

LORAC

RADIO LOCATION SERVICES FOR USE IN OCEANOGRAPHY, MISSILE LAUNCHING SYSTEMS, MISSILE TRACKING AND RECOVERY, SUBMARINE CABLE LAYING; ELECTRONIC DISTANCE MEASURING SERVICES FOR SUCH APPLICATIONS AS FIRST ORDER TRILATERATION, MARINE GEOPHYSICAL EXPLORATION, AIR BORNE GEOPHYSICAL EXPLORATION, OFFSHORE DRILLING, TRANSPORTATION AND PRODUCTION; AND COMMUNICATIONS SERVICES AS RELATED TO THE RADIO LOCATION AND ELECTRONIC DISTANCE MEASURING SERVICES INCLUDING THE USE OF TRANSMITTERS, RECEIVERS, TRACKING COURSE PLOTTERS, DATA RECORDING SYSTEMS, ANTENNAS, POWER SUPPLIES;

LORAC

RADIO LOCATION EQUIPMENT FOR USE IN OCEANOGRAPHY, MISSILE LAUNCHING SYSTEMS, MISSILE TRACKING AND RECOVERY, SUBMARINE CABLE LAYING; ELECTRONIC DISTANCE MEASURING SYSTEMS FOR SUCH APPLICATIONS AS FIRST ORDER TRILATERATION, MARINE GEOPHYSICAL EXPLORATION, AIR BORNE GEOPHYSICAL EXPLORATION, OFFSHORE DRILLING, TRANSPORTATION AND PRODUCTION; AND COMMUNICATIONS EQUIPMENT INCLUDING TRANSMITTERS, RECEIVERS, TRACKING COURSE PLOTTERS, DATA RECORDING SYSTEMS, ANTENNAS, POWER SUPPLIES;

SEISCOR/HAN RHEOMETER

Viscosity and Elasticity Measuring Rheometers;No claim is made to the exclusive right to use the word Rheometer, apart from the mark as shown.;

SEISVIEWER

WELL LOGGING SERVICES;

SSC

GEOPHYSICAL PROSPECTING SERVICES SUCH AS THE CONDUCTING OF SEISMOGRAPH SURVEYS FOR MAJOR AND OTHER OIL COMPANIES AND FOR INDEPENDENT OIL OPERATORS;

VER I COM

ELECTRONIC TELEMETERING AND COMMUNICATING EQUIPMENT FOR SUPERVISORY CONTROL;