U.S. federal trademark · Serial No. 71545466 · Reg. No. 0518962
HOT TOP COMPOUND, THAT IS TO SAY A COMPOUND FOR USE AS A MORTAR FOR PATCHING AND SEALING JOINTS IN A HOT TOP LINING AND AS A PARTING COMPOUND TO BE APPLIED TO THE SURFACE OF A HOT TOP LINING TO FACILITATE THE STRIPPING OF THE HOT TOP FROM THE INGOT
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