73314638
Jun 15, 1981
Sep 13, 1983
Refractory Machinery Components-Namely, Combustion Chambers, Nozzles of Refractory Materials for Burners, Rotors, Stators, Blades for High Temperature Gas Turbines and Plane Bearings
MachineryRefractory Bricks, Mortar and Ramming Compounds, Shaped Bricks for the Lining of Ovens and Boilers, Refractory Inserts for Furnaces, Refractory Tubes and Tubular Pieces, Refractory and Abrasionproof Shaped Bricks for Furnaces in the Metallurgical Industry
Nonmetallic Building Materials