U.S. federal trademark · Serial No. 85749071 · Reg. No. 4839121
Chemical additives for drilling muds; chemical additives for oil well drilling fluid; chemical preparations for use in industry, namely, the oil well drilling industry; chemicals for use in the field of oil exploration and production; chemicals used in industry, namely, the oil well drilling industry; chemicals used in oil drilling; all the foregoing not for use in processes related to the separation of oil/gas from water
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