.~ Combined with nonelectric heating means (e.g., gas, etc.) {3}
308
.~.~ For heating liquid
DEFINITION
Classification: 392/308
For heating liquid:
(under subclass 307) Subject matter wherein the heating device is for heating a substance in that state in which the particles move freely among themselves but without tendency to separate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311+, for heating liquid by fluid-in-circuit type heater.
441+, for tank or container type liquid heater.
465+, for continuous flow type fluid heater.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers, appropriate subclasses for liquid heaters and vaporizers.
126, Stoves and Furnaces, 344+, for water heaters.
165, Heat Exchange, appropriate subclasses for heating liquid by utilizing heat exchange.
237, Heating Systems, appropriate subclasses for heating liquid by heating systems.
