(under subclass 23) Method for fabricating or manufacturing a device that produces light when a filament is heating in a vacuum or inert atmosphere by passing an electric current through the filament.
SEE OR SEARCH THIS CLASS, SUBCLASS:
28, for methods of manufacturing flash lamp, X-ray or laser.
29+, for methods including electrode or getter mounting.
35+, for methods of assembly or disassembly including electrode making.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices, appropriate 315, for incandescent lamps, per se, subclasses 578+ for incandescent lamps having envelope with gas or vapor.
