U.S. federal trademark · Serial No. 73122037 · Reg. No. 1121328
APPARATUS AND INSTRUMENTS FOR TESTING DRILLING MUD, WATER, CORROSION, WELL CORES, WELL CUTTINGS, AND CLAY AND MINERAL SUSPENSIONS-NAMELY, RESISTIVITY METERS, MEMBRANE FILTER TESTERS, PH-METERS, RHEOMETERS, GREEN SAND STRENGTH TESTERS, MUD TESTERS, VISCOMETERS, AND CONSISTOMETERS
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