US PATENT SUBCLASS 126 / 72
.~.~.~ Tubular air heaters

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


126 /   HD   STOVES AND FURNACES

*  DD  STOVES {3}
58  DF  .~ Heating {18}
67  DF  .~.~ Hot air {5}
72.~.~.~ Tubular air heaters

DEFINITION

Classification: 126/72

(under subclass 67) Devices provided with a series of air-tubes which are passed vertically, horizontally, or diagonally through the combustion chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

70, for central chamber hot air radiating stoves.

71, for hot air radiating stoves having central, vertical tubes.

109, for hot air furnaces having tubular air passages.