US PATENT SUBCLASS 126 / 115
.~ Dust flue

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

99 R  DF  HOT-AIR FURNACES {24}
115.~ Dust flue

DEFINITION

Classification: 126/115

(under subclass 99) Hot air furnaces provided with means for conveying the dust resultant from raking the fire to the smoke-pipe or fire-pot.