Description
Class H05B : ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
Subclass 3/30: Ohmic-resistance heating Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater (H05B 3/62, H05B 3/68, H05B 3/78, H05B 3/84 take precedence) non-flexible heating conductor embedded in insulating material on or between metallic plates