US PATENT SUBCLASS 126 / 106
.~ Internal air chamber

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

99 R  DF  HOT-AIR FURNACES {24}
106.~ Internal air chamber

DEFINITION

Classification: 126/106

(under subclass 99) Hot air furnaces in which an air heating chamber is centrally situated as respects the combustion-chamber and provided with passages which connect the chamber with the space formed by the inclosing case or jacket.

SEE OR SEARCH THIS CLASS, SUBCLASS:

70, 71 and 109, for air heating structures.