(under subclass 11) Subject matter in which the temperature modifier is an electric heater.
(1) Note. This subclass does not include lamps or discharge devices where the only heating means for the lamp or discharge device is a light emitting filament, a directly heated or indirectly heated cathode or other thermionic cathode or where the heating means is a means for heating a gas or vapor generating material (e.g., a getter). See subclasses 549+ for the discharge devices and lamps with electric heating means for a gas or vapor generating material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
14, where the lamp is a pyroelectric lamp and is provided with an electric heater to heat the glower.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
115+, for electric lamp and discharge device systems where the lamp or discharge device is provided with an electrical heater to modify the temperature of the lamp or discharge device and the system includes means to control or supply current to the heater or the lamp or discharge device.
