US PATENT SUBCLASS 119 / 262-- .~.~.~.~ And heat exchanger

US PATENT SUBCLASS 119 / 262
.~.~.~.~ And heat exchanger

Current as of: June, 1999
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119 /	HD	ANIMAL HUSBANDRY

200	DF	AQUATIC ANIMAL CULTURING {5}
245	DF	.~ Aquarium {13}
259	DF	.~.~ Filter {2}
261	DF	.~.~.~ With aerator {1}
262		.~.~.~.~ And heat exchanger

DEFINITION

Classification: 119/262

And heat exchanger:

(under subclass 261) Subject matter including means to raise or lower the aquarium water temperature.

SEE OR SEARCH THIS CLASS, SUBCLASS:

229, for a fish enclosure with a heat exchanger.

SEE OR SEARCH CLASS

219, Electric Heating,

523, for a heating device having a housing, casing, or support Insertable into material or space to be heated (e.g., immersion type, etc.).

392, Electric Resistance Heating Devices,

441, for a tank-type liquid heater and subclass 458 for a heating device located outside a tank in heat exchange relation to a liquid to be heated.