US PATENT SUBCLASS 126 / 116 A
.~.~ Automatic control

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

99 R  DF  HOT-AIR FURNACES {24}
116 R  DF  .~ Liquid or gaseous fuel {3}
116 A.~.~ Automatic control

Unofficial Alpha Subclasses: R A B C

DEFINITION

Classification: 126/116

(under subclass 99) Hot-air furnaces in which the heating agent is either a liquid or gaseous fuel burner or combined coal and liquid or gaseous fuel burner. Also included here are attachments independent of the main furnace, but connected thereto, and floor-register attachments.

SEE OR SEARCH CLASS

454, Ventilation,

284+, for register features.