US PATENT SUBCLASS 219 / 412
.~.~.~ With current or voltage control or regulating 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}
412.~.~.~ With current or voltage control or regulating means {1}
413  DF  .~.~.~.~> Automatically responsive to condition of heating area

DEFINITION

Classification: 219/412

(under subclass 391) Subject matter including means whereby the current traversing the heating element or elements of the device is maintained between levels or is applied at a predetermined time or for predetermined intervals of time by either electromechanical or electrical means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

482+, for power supply, voltage or current regulation or control means applicable to heating devices under the class definition.