73430789
Jun 17, 1983
INSTALLATIONS FOR LIGHTING, HEATING, STEAM GENERATING, COOKING, REFRIGERATING, DRYING, VENTILATING, WATER SUPPLY AND SANITARY PURPOSES, ESPECIALLY INSTALLATIONSFOR TREATMENT OF ORES, SHAFT FURNACES, MELTING FURNACES, HEATING DEVICES, BURNERS PARTICULARLY PLASMAGENERATORS, CONVERTERS, REFRIGERATING COMPONENTS, CONVERTERTERS, REACTORS,MIXING CHAMBERS AND COMBUSTION CHAMBERS
Environmental Control ApparatusMATERIAL WORKING AND TREATMENT, ESPECIALLY WORKING AND TREATMENT OF ORES, REDUCTION PROCESSES, REFINING PROCESSES, PREPARING AND PROCESSING METALS
Treatment of Materials