US PATENT SUBCLASS 266 / 191
.~.~.~ By means cooling material discharge means

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

168  DF  MEANS FOR TREATING ORES OR FOR EXTRACTING METALS {3}
171  DF  .~ By means applying heat to work, e.g., furnace {10}
190  DF  .~.~ With cooling of heating means {3}
191.~.~.~ By means cooling material discharge means

DEFINITION

Classification: 266/191

(under subclass 190) Device for maintaining the temperature of a delivery opening or structure associated therewith within acceptable limits.