(under subclass 490) Subject matter including a signaling or indicating means whereby the electrical condition of the power supply and voltage or current regulation or control apparatus or the amount of current traversing the controlled heating device is readily discernable and which is peculiarly adapted for use with heating devices under the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109, for resistance welder systems with indicator.
248, for electric flatiron type devices with condition indicator.
269, for resistive igniters with indicating means.
453, for planar surface heaters with circuit condition indicator. 487, for selectively or sequentially controlled resistance heating elements with indicator.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus,
342+, for cooking apparatus with signal, indicator or testing means.
116, Signal and Indicators,
216+, for thermal indicators or signals.
122, Liquid Heaters and Vaporizers,
504.2, for safety devices comprising alarms or indicators.
126, Stoves and Furnaces,
388, for water heating vessels combined with signal or indicator means.
236, Automatic Temperature and Humidity Regulation,
94, for thermostatic control devices with indicators or alarm means. 324, Electricity: Measuring and Testing,
76.11+, for devices for measuring, testing or sensing electricity, per se.
340, Communications: Electrical,
635+, for electrical apparatus condition responsive, signals and alarms in general.
