Christmas bulb structure
Double filament incandescent lamp
Dual length copier lamp
Filament lamp
Filament lead-in support for tungsten halogen capsule for headli
Halogen incandescent lamp and a lighting apparatus using the...
Halogen incandescent lamp incorporating two filaments for...
Heater and heating device with heaters with lamps having an...
Incandescent lamp with an improved filament implementation
Incandescent light bulb with multiple filaments providing multip
Incandescent multi-filament light bulb
Light bulb assembly having a light bulb with the ability to...
Light source with matrix of microfilaments