US PATENT SUBCLASS 219 / 487
.~.~.~.~ With indicator means

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}
482  DF  .~ With power supply and voltage or current regulation or current control means {4}
483  DF  .~.~ Controlling or regulating plural separate distinct heating resistance elements(i.e., one control system for all elements) {3}
486  DF  .~.~.~ Selectively, sequentially or alternately {1}
487.~.~.~.~ With indicator means

DEFINITION

Classification: 219/487

(under subclass 486) Subject matter including means whereby some condition of the heating device is indicated either visually or audibly.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, for pressure type electric metal welding systems with indicator.

248, for electric flatiron type devices with condition responsive indicator.

269, for resistive element igniters with indicating means.

453, for planar surface heater with circuit condition indicator.

506, for automatically regulated heater systems in general with signal or indication means. SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

167, for switch condition indicators.

337, Electricity: Electrothermally or Thermally Actuated Switches, appropriate subclasses for thermally actuated switches with indicator means.

340, Communications: Electrical,

500+, for electrical signals automatically responsive to a condition particularly subclass 523 for signalling means automatically responsive to the sequence of operation of plural devices.