US PATENT SUBCLASS 392 / 434
.~.~.~.~ On ceramic support structure

Current as of: June, 1999
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392 /   HD   ELECTRIC RESISTANCE HEATING DEVICES

*  DD  HEATING DEVICES (CLASS 219 SUBCLASS 200) {11}
407  DF  .~ Radiant heater {10}
432  DF  .~.~ Radiant extended surface type heater {2}
433  DF  .~.~.~ With exposed radiant heating element {1}
434.~.~.~.~ On ceramic support structure

DEFINITION

Classification: 392/434

On ceramic support structure:

(under subclass 433) Subject matter wherein the radiant heating element is supported by an electrically insulative refractory material.