US PATENT SUBCLASS 110 / 287
.~.~ Having circular grate

Current as of: June, 1999
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110 /   HD   FURNACES

267  DF  INCLUDING MEANS TO FEED SOLID FUEL {4}
286  DF  .~ Power driven {2}
287.~.~ Having circular grate {1}
288  DF  .~.~.~> And forced air supply

DEFINITION

Classification: 110/287

Having circular grate:

(under subclass 286) Apparatus provided with a fuel supporting means which is round in structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

277, for similar inverted frustoconical rotary grate structure with or without forced air means.