73230306
Sep 6, 1979
Mar 15, 1983
Heat-Resistant and Acid-Resistant Linings Used in Chimneys, Blast Furnaces, Sintering and Pelletizing Plants, Power Station Boilers, Incineration Plants, Foundries and Other Industrial Furnaces and High-Temperature Heating Chambers
Environmental Control ApparatusCeramic Mixes, and Ceramic-and-Resin Mixes, for Use in Manufacture of Heat-Resistant and Acid-Resistant Linings for Use in Chimneys, Blast Furnaces, Sintering and Pelletizing Plants, Power Station Boilers, Incineration Plants, Foundries and Other Industrial Furnaces and High-Temperature Heating Chambers
Nonmetallic Building Materials