US PATENT SUBCLASS 126 / 534
.~.~.~ And adjustable flue damper

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

500  DF  FIREPLACES OR ACCESSORIES {19}
523  DF  .~ With heat exchanger for room heating air {7}
533  DF  .~.~ With air flow regulator {1}
534.~.~.~ And adjustable flue damper

DEFINITION

Classification: 126/534

And adjustable flue damper:

(under subclass 533) Subject matter, and further including a closure plate in a channel leading from the flame to the exterior of the enclosure, and wherein means is provided for moving said plate to affect the amount of combusted gases passing through said channel.