72410643
Dec 20, 1971
Jun 11, 1974
M-I DRILLING FLUIDS COMPANY L.L.C.
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WELL DRILLING EQUIPMENT-NAMELY, GAS SEPARATORS, CHOKES, AND MECHANICAL MUD TREATERS
OIL WELL MONITORING EQUIPMENT-NAMELY, FLOW SENSORS, PUMP-STROKE COUNTERS, AND PIT VOLUME TOTALIZERS