US PATENT SUBCLASS 392 / 378
.~.~.~.~ In plural sections

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

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
347  DF  .~ Convection space heater {10}
375  DF  .~.~ Combined with radiation {2}
377  DF  .~.~.~ With heat exchange fluid {1}
378.~.~.~.~ In plural sections

DEFINITION

Classification: 392/378

In plural sections:

(under subclass 377) Subject matter having two or more compartments for accommodating the heat exchange fluid.

SEE OR SEARCH CLASS

165, Heat Exchange,

172+, for side-by-side tubular structure or tube sections.

237, Heating Systems,

16+, for combined radiator and boiler and subclasses 70+ for heat radiator.