US PATENT SUBCLASS 126 / 15 A
.~.~.~ Forced air

Current as of: June, 1999
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126 /   HD   STOVES AND FURNACES

*  DD  STOVES {3}
1 R  DF  .~ Cooking {31}
15 R  DF  .~.~ Feeding air {1}
15 A.~.~.~ Forced air

Unofficial Alpha Subclasses: R A

DEFINITION

Classification: 126/15

(under subclass 1) Subject matter including means for the preliminary heating of air before its introduction into the combustion chamber or flues.

SEE OR SEARCH CLASS

110, Furnaces,

201, for a locomotive furnace provided with an air preheater; subclass 254 for a refuse incinerator provided with an air preheater; and subclasses 302+ for other types of solid fuel furnaces provided with an air preheater.