US PATENT SUBCLASS 219 / 422
.~.~.~ With plural separate heating units


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



219 /   HD   ELECTRIC HEATING

200  DF  HEATING DEVICES {14}
385  DF  .~ Combined with container, enclosure, or support for material to be heated {12}
420  DF  .~.~ Crucible or furnace type (i.e., adapted to hold meltable material) {6}
422.~.~.~ With plural separate heating units


DEFINITION

Classification: 219/422

(under subclass 420) Subject matter including at least two or more separate and distinct heating units.

SEE OR SEARCH THIS CLASS, SUBCLASS:

476+, for a plurality of heating devices, under the class definition, especially subclass 478 for such a plurality combined with a unitary housing or support.