Spherical or ellipsoidal luminaire for electric light bulbs
DE518294C
Process for the production of helical light bodies for electric light bulbs from single or long crystal wire
DE464658C
Wire luminaire for large-candle electric light bulbs
DE459651C
Process for the production of screw-shaped luminous bodies made of long crystal wire that are difficult to melt metals
DE454637C
Electric heating and cooking apparatus with good heat-conducting gas filling serving as a heat exchanger between the heating resistor and the point of consumption
DE410429C
Electric multi-filament light bulb
DE462795C
Spherical or ellipsoidal luminaire for electric light bulbs
DE471999C
Process for the production of spherical or ellipsoidal luminous bodies from tungsten wire for electric light bulbs
DE476805C
Spherical or ellipsoidal luminaire for electric light bulbs
DE500736C
Gas-filled electric light bulb for high amperage
DE464659C
Wire luminaire for large-candle electric light bulbs
DE484267C
Process for the production of screw-shaped tungsten ribbon luminaires for electric incandescent lamps using the paste process
DE476806C
Spherical or ellipsoidal luminaire for electric light bulbs