Device for operating discharge lamps by means of a...

Dual filament lamp and drive apparatus for dimmable avionics dis

Dual filament lamp control system

Dual light source

Electric incandescent lamp

Filament switching device

Lamp circuit apparatus

Light bulb with program disc

Lighting system having dimming capabilities

Long life incandescent lamp

Long-life luminaires

Method and a device for replacing incandescent filaments, and a

Motor vehicle rear lighting system

Mounting structure and related method both for a multi-filament

Multifilament bulb with filament switching device

Multifilament lamp, a method for varying its brightness and cont

Multifilament light bulb

Multiple filament electric lamp

Multiple intensity lamp controller and lighting system

Rotatable multiple filament lamp and socket adapter