US PATENT SUBCLASS 392 / 441
.~ Tank or container type liquid heater

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
441.~ Tank or container type liquid heater {4}
442  DF  .~.~> Pour-in displacement discharge type tank
443  DF  .~.~> Flexible container (e.g., water bottle, etc.)
444  DF  .~.~> Portable container or tank {3}
449  DF  .~.~> Line connected tank {4}

DEFINITION

Classification: 392/441

Tank or container type liquid heater:

(under subclass 200) Subject matter under Class 219, ... wherein the heating device includes a vessel for heating liquid therein.

SEE OR SEARCH THIS CLASS, SUBCLASS:

308, for heating liquid by electricity combined with nonelectric heating means.

322, for reservoir or tank type of fluid-in-circuit heater.

325, for line connected boiler.

333, for manually filled tank or container.

341, for fluid heating with heat storage means. 377+, for heat exchange fluid.

400+, for in-line connected closed tank.

402, for in-line connected open tank.

403+, for container with self-contained evaporant supply.

SEE OR SEARCH CLASS

4, Baths, Closets, Sinks, and Spittoons,

493, for pool type with heating means.