U.S. federal trademark · Serial No. 86450578 · Reg. No. 4999059
Chemical additives made in significant part of potassium chloride for drilling muds; Chemical additives made in significant part of potassium chloride for oil well drilling fluid; Chemicals made in significant part of potassium chloride used in oil drilling; Drilling muds made in significant part of potassium chloride for use in oil well drilling
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