US PATENT SUBCLASS 219 / 399
.~.~.~ With heat energy transfer, distribution, or accumulator means

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
385  DF  .~ Combined with container, enclosure, or support for material to be heated {12}
391  DF  .~.~ Oven type {12}
399.~.~.~ With heat energy transfer, distribution, or accumulator means {1}
400  DF  .~.~.~.~> By convection

DEFINITION

Classification: 219/399

(under subclass 391) Subject matter including means whereby heat energy derived from the heating unit or units is transferred by means other than direct conduction to the oven to be heated, is distributed evenly to all parts of the heated oven type enclosure or is accumulated for later distribution to the heated oven.

SEE OR SEARCH THIS CLASS, SUBCLASS:

325+, for liquid heaters with heat storage or transfer means.

347, for fluid heaters of the radiant type with heat storage or transfer means.

365, for fluid heaters of the convection type with heat storage or transfer means.

378, for fluid heaters in general with heat storage or transfer means.

390, for muffle type heater. 430, for vessel and stand with heat storage or transfer means.

439, for vessel with heat storage and transfer means.

530, for housing or casing in general with heat storage or transfer means.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

389, 401, 433, and 447 for heat distributors associated with various types of cooking apparatus.

126, Stoves and Furnaces,

273.5, for domestic ovens with heat accumulator means (e.g., fireless), and subclass 274 for Dutch ovens.