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Incandescent - Tungsten Filament
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Updated
30-I-2008 |
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| | Drawn Tungsten Filament |
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GEC |
40W |
| Osram Drawn Tungsten "Angle" Type |
| 1911 |
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| | Coiled Tungsten Filament |
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Philips |
100W |
| Tungsten Gasfilled HalfWatt |
| 1919 |
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Duro-Test |
65W |
| Tungsten Gasfilled with IRC Coating |
| c. 1980 |
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