US PATENT SUBCLASS 236 / 14
COMBINED BOILER AND FURNACE CONTROLLED

Current as of: June, 1999
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236 /   HD   AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION

14COMBINED BOILER AND FURNACE CONTROLLED

DEFINITION

Classification: 236/14

(under the class definition) Devices controlling the fire under a boiler according to conditions in the boiler and also according to conditions in the furnace.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15, for devices responsive to changes within the furnace.

20+, for control devices operated by changes in the boilers.