US PATENT SUBCLASS 392 / 446
.~.~.~ With agitator

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
441  DF  .~ Tank or container type liquid heater {4}
444  DF  .~.~ Portable container or tank {3}
446.~.~.~ With agitator

DEFINITION

Classification: 392/446

With agitator:

(under subclass 444) Subject matter wherein the tank or liquid container is provided with means to stir, move or circulate the heated liquid in the tank to maintain a constant uniform temperature condition throughout the entire quantity of liquid.

SEE OR SEARCH CLASS

119, Animal Husbandry,

229, for a fish enclosure with a heat exchanger and subclass 262 for an aquarium with a heat exchanger and aerator which may agitate.

165, Heat Exchange,

109.1, for agitating or stirring structure.

366, Agitating, 144+, for heating or cooling.

432, Heating,

151, for stirrer in externally heated tank.