Incandescent - Tungsten Filament

Updated
30-I-2008

Drawn Tungsten Filament

GEC

40W

Osram Drawn Tungsten "Angle" Type
1911
       

Coiled Tungsten Filament

Philips

100W

Tungsten Gasfilled HalfWatt
1919

Duro-Test

65W

Tungsten Gasfilled with IRC Coating
c. 1980