Patent for Sale:Private Listing: Number 5652
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Class 392: Electric Resistance Heating DevicesSubclass 441: Tank or container type liquid heater
Subclass 498: With thermostatic control means
Class 219: Electric Heating
This class includes all those devices commonly known as electric heaters, electric-heating metal working apparatus, electrically-heated tools and instruments. This is the generic class for electric heating devices, per se. Devices and systems equipped with electric heating means in which the electric heating means is combined with or includes specific other art structure whereby the heated material is withdrawn, stored or otherwise utilized will also be classified in the appropriate other art class to which it pertains.Subclass 238: Detachable tip
Subclass 441: With temperature or current control means