U.S. federal trademark · Serial No. 71385491 · Reg. No. 0346131
SILICATE OF SODA, EITHER ANHYDROUS, HYDRATED OR IN SOLUTION (EITHER WITH OR WITHOUT MINOR QUANTITIES OF ADMIXED MINERAL INGREDIENTS) USED IN THE WELL DRILLING INDUSTRY TO IMPART TO DRILLING MUDS THE ABILITY TO MAKE CONTACT WITH THE SO-CALLED HEAVING SHALE WITHOUT DISINTEGRATING
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