US PATENT SUBCLASS 219 / 468.1
.~.~.~ Heating element is embedded in the exposed horizontal planar support surface

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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}
443.1  DF  .~.~ Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) {13}
468.1.~.~.~ Heating element is embedded in the exposed horizontal planar support surface

DEFINITION

Classification: 219/468.1

Heating element is embedded in the exposed horizontal planar support surface:

(under subclass 443.1) Subject matter wherein the means to convert electrical energy into thermal energy is implanted within the exposed horizontal planar support surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

538+, for a heating unit structure.

SEE OR SEARCH CLASS

338, Electrical Resistors,

226+, for an encased, embedded, or housed electrical resistor.