U.S. federal trademark · Serial No. 73151575 · Reg. No. 1117981
CHEMICALS AND CHEMICAL COMPOSITIONS FOR USE AS CORROSION INHIBITORS TO PREVENT CORROSION OF METALLIC DRILL PIPE USED IN OIL WELLS AND FOR CHEMICALS AND CHEMICAL COMPOSITIONS TO REMOVE CORROSION INHIBITORS FROM DRILL PIPE PRIOR TO THE REUSE OF SAID DRILL PIPE
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