US PATENT SUBCLASS 110 / 225
.~.~.~ Furnace with multiple hearth

Current as of: June, 1999
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110 /   HD   FURNACES

218  DF  WITH FUEL TREATMENT MEANS {3}
219  DF  .~ Preliminary refuse treatment means {4}
224  DF  .~.~ Dryer {3}
225.~.~.~ Furnace with multiple hearth

DEFINITION

Classification: 110/225

Furnace with multiple hearth:

(under subclass 224) Apparatus provided with plural drying means wherein the refuse is moved progressively from one drying zone to another.