US PATENT SUBCLASS 237 / 7
.~ Combined radiator and boiler

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

2 R  DF  AUTOMATIC CONTROL {9}
7.~ Combined radiator and boiler

DEFINITION

Classification: 237/7

(under subclass 2) Automatic control of a unitary structure consisting of steam or water radiators combined with a boiler.

SEE OR SEARCH CLASS

122, Liquid Heaters and Vaporizers, for boiler, per se.

236, Automatic Temperature and Humidity Regulation, for controller, per se.