US PATENT SUBCLASS 110 / 231
.~.~.~ Undergrate


Current as of: June, 1999
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110 /   HD   FURNACES

218  DF  WITH FUEL TREATMENT MEANS {3}
229  DF  .~ Means for liberating gas from solid fuel {1}
230  DF  .~.~ Coking means {1}
231.~.~.~ Undergrate


DEFINITION

Classification: 110/231

Undergrate:

(under subclass 230) Apparatus provided with means to pass the separated fluid under the fuel supporting means and through a combustion reaction.