US PATENT SUBCLASS 219 / 466.1
.~.~.~.~ Foil or film-type of heating element

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}
443.1  DF  .~.~ Exposed horizontal planar support surface for material to be heated (e.g., hot plate, etc.) {13}
465.1  DF  .~.~.~ Heating element contacting planar underside of the exposed horizontal planar support surface (e.g., sheet metal, etc.) {2}
466.1.~.~.~.~ Foil or film-type of heating element

DEFINITION

Classification: 219/466.1

Foil or film-type of heating element:

(under subclass 465.1) Subject matter wherein the heating element is a very thin piece of material, covering, coating, or layer.

(1) Note. The foil or film can be sheet metal, lamina, plate, or scale.