US PATENT SUBCLASS 237 / 15
.~ Water

Current as of: June, 1999
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237 /   HD   HEATING SYSTEMS

14  DF  BROODER AND INCUBATOR {1}
15.~ Water

DEFINITION

Classification: 237/15

(under subclass 14) Systems in which the heating medium is water.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4, for automatic control

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation, for automatic control, per se.