US PATENT SUBCLASS 219 / 270
.~.~ With igniter unit structure

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}
260  DF  .~ Resistive element: igniter type {6}
270.~.~ With igniter unit structure

DEFINITION

Classification: 219/270

(under subclass 260) Subject matter including significant details of the resistance heating unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

267, for the resistance heating structure associated with additional housing or support means.

538+, for significant heating unit structure useful in heating devices in general under the class definition.

SEE OR SEARCH CLASS

338, Electrical Resistors, appropriate subclasses for resistor element structure, per se.