.~.~.~ With current control or external circuit opening or closing means
DEFINITION
Classification: 219/419
(under subclass 415) Subject matter including means whereby the current traversing the heating element, or elements of the device, is regulated or maintained between predetermined limits, or applied to or withdrawn from the device thereby assuring that the temperature of the heating space is maintained at a predetermined value or between predetermined limits.
SEE OR SEARCH THIS CLASS, SUBCLASS:
482+, below for heating devices in general under the class definition combined with power supply, voltage or current regulation or current control means.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus,
331+, for cooking devices with automatic control of the heat or heater.
126, Stoves and Furnaces, 374, for water heating vessels with automatic control.
