U.S. federal trademark · Serial No. 74107100 · Reg. No. 1746414
ceramic refractory workpieces; namely, bricks, plates, bottoms and ceilings of furnaces, including tubes, immersion pipes, plugs, tuyeres, and well nozzles; tapping spouts, spreader conduits for metallurgical purposes; ceramic refractory workpieces for the construction of intermediate walls in metallurgical vessels
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