Incandescent lamp containing additive to reduce filament sag

H - Electricity – 01 – K

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H01K 1/04 (2006.01) H01K 1/50 (2006.01) H01K 1/56 (2006.01)

Patent

CA 1190590

TUNGSTEN-HALOGEN INCANDESCENT LAMP CONTAINING ADDITIVE TO REDUCE FILAMENT SAG 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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