US PATENT SUBCLASS 392 / 499
.~.~ Buoyant in liquid

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
497  DF  .~ Immersion heater details {6}
499.~.~ Buoyant in liquid

DEFINITION

Classification: 392/499

Buoyant in liquid:

(under subclass 497) Subject matter wherein the heater includes means capable of keeping the heater afloat in the liquid.

SEE OR SEARCH CLASS

119, Animal Husbandry,

73, for temperature controlling water devices.

126, Stoves and Furnaces,

366, 368 for submerged water heaters.