.~.~> With filter, barrier, screen, shield, electric terminal or fuse
DEFINITION
Classification: 313/578
Incandescent filament lamp:
(under subclass 567) Subject matter which includes an electrical filament capable of being energized within the envelope so that the filament as a result of the energization is heated to emit electromagnetic radiation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, for a lamp or discharge device with a temperature modifier for a filament or heated cathode.
110+, for an incandescent lamp having an optical device or a a special ray transmissive envelope intergal therewith.
315+, for incandescent lamp having a glower or filament adapted to be heated to incandescence by passage of current therethrough.
317+, for significant envelope or envelope and base structure and a filament or light emitter body in name only or broadly and no relationship to other parts of the lamp.
341+, for a lamp only with significant filament or glower structure. 557, for a getter integral with an incandescent lamp.
563, for a lamp having a gas generating material.
564+, for a lamp having vapor generating material.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems, particularly
46, for a combined load device or load device temperature modifying means wherein there is a filament, electric heater, or resistance in shunt with the discharge electrodes of a discharge device load, subclass 49 for a filament or electric in series with a discharge device load and subclasses 82+ for headlight systems.
