US PATENT SUBCLASS 236 / 32
.~.~ Expanding fluid

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

20 R  DF  CLOSED FLUID HEATERS {8}
*  DD  .~ Thermostatic {2}
32.~.~ Expanding fluid

DEFINITION

Classification: 236/32

(under subclass 20) Devices controlling the heating means directly by a thermostat of the expanding-fluid type responsive to the temperature of the fluid heated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4, 42, 56+, 64, 86, 95, and 99, for the type of thermostat used and devices operated thereby.

18, for similar structure in exchange heaters.