US PATENT SUBCLASS 110 / 208
.~ Furnace having multiple firebox

Current as of: June, 1999
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110 /   HD   FURNACES

203  DF  WITH EXHAUST GAS TREATMENT MEANS {5}
208.~ Furnace having multiple firebox {1}
209  DF  .~.~> By undergrate means

DEFINITION

Classification: 110/208

Furnace having multiple firebox:

(under subclass 203) Apparatus having a plurality of combustion chambers and further provided with means for passing combustion products from one combustion chamber to another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

295+, for other types of multiple firebox combustion apparatus.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers,

57, and 60 provided with multipart water fireboxes provided with means for passing combustion products from one part to the other.