Tungsten-halogen incandescent lamp containing additive to reduce

Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp

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313271, H01K 162

Patent

active

044220090

ABSTRACT:
Filament sag in tungsten-halogen lamps is significantly reduced by including within the envelope an additive selected from the group of bismuth, antimony and tellurium and combinations thereof.

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