US PATENT SUBCLASS 126 / 71
.~.~.~ Central air tube

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

*  DD  STOVES {3}
58  DF  .~ Heating {18}
67  DF  .~.~ Hot air {5}
71.~.~.~ Central air tube

DEFINITION

Classification: 126/71

(under subclass 67) Devices in which an air-tube passes vertically and centrally through the heater.

SEE OR SEARCH THIS CLASS, SUBCLASS:

70, for central chamber hot air radiating stoves.

72, for tubular chamber hot air radiating stoves.

109, for hot air furnaces having tubular air passages.