US PATENT SUBCLASS 392 / 349
.~.~ Central heating type

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}
349.~.~ Central heating type {1}
350  DF  .~.~.~> With air delivery duct

DEFINITION

Classification: 392/349

Central heating type:

(under subclass 347) Subject matter wherein the convection space heater is located at a central location to convey heated air to different parts or rooms of a building.

SEE OR SEARCH CLASS

126, Stoves and Furnaces,

99+, for hot air furnaces.

165, Heat Exchange,

50, for room heat exchangers with central fluid supply.

236, Automatic Temperature and Humidity Regulation,

10+, for hot air furnace. 237, Heating Systems,

50+, for air heating system.

454, Ventilation,

228+, and 330+ for ventilating a building.