US PATENT SUBCLASS 219 / 536
.~.~ With heating unit mounting or attaching means

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
520  DF  .~ With heater-unit housing, casing, or support means (e.g., frame and single sheet) {13}
536.~.~ With heating unit mounting or attaching means {1}
537  DF  .~.~.~> Plural units combined with single casing housing or support

DEFINITION

Classification: 219/536

(under subclass 520) Subject matter wherein the housing, casing or support structure includes significant structure whereby the heating unit is attached to or mounted upon or within the housing, casing or support means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

463, for planar surface heater with heating unit attachment or securing means.

542+, for resistive element attaching or securing means.