U.S. federal trademark · Serial No. 72077359 · Reg. No. 0759631
LABORATORY PORCELAIN WARE CONSISTING OF REFRACTORY TUBES AND VESSELS, SAMPLING TUBES, PYROMETER TUBES, COMBUSTION TUBES, CRUCIBLES, COMBUSTION BOATS, EVAPORATING DISHES, CASSEROLES, AND CHEMICAL PORCELAIN WARE
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