U.S. federal trademark · Serial No. 72117128 · Reg. No. 0728243
Combined Bottom Ring and Wiper Strip Used in Connection with Certain Types of Hot Tops which Are Used with Ingot Molds in Pouring Molten Steel, the Bottom Ring Being a Molded Refractory Article and the Wiper Strip Being Formed of Metal and United with the Bottom Ring to Constitute Therewith a Unit
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