US PATENT SUBCLASS 126 / 533
.~.~ With air flow regulator
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
.~.~ With air flow regulator {1}
534
DF
.~.~.~
> And adjustable flue damper
DEFINITION
Classification: 126/533
With air flow regulator:
(under subclass 523) Subject matter including means to control the amount of air flowing through said flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
517, 518, 526, and 530, for air flow regulation in the specific structure provided for therein.