US PATENT SUBCLASS 110 / 201
.~.~.~ Preheater

Current as of: June, 1999
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110 /   HD   FURNACES

198  DF  LOCOMOTIVE {1}
199  DF  .~ Having noncombustible fluid feed means {2}
200  DF  .~.~ And noncombustible fluid treatment means {1}
201.~.~.~ Preheater

DEFINITION

Classification: 110/201

Preheater:

(under subclass 200) Apparatus wherein the modifying means is provided to increase the temperature of the fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

302+, for other types of solid fuel combustion apparatus having a preheater.