US PATENT SUBCLASS 219 / 398
.~.~.~.~ Selectively energized

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}
395  DF  .~.~.~ With plurality of separate heating units {3}
398.~.~.~.~ Selectively energized

DEFINITION

Classification: 219/398

(under subclass 395) Subject matter including means whereby the separate heating units are adapted to be selectively energized in a predetermined manner or at will.

SEE OR SEARCH THIS CLASS, SUBCLASS:

457.1, for an exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) having a direct manually actuated electrical switch.

480, below for separate heating devices in general under the class definition combined with means whereby they are selectively activated and subclasses 483+ for plural separate resistance elements combined with control means.