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Who discovered tungsten filament lamp? ​

Answer»

Answer:

On 13 December 1904, Hungarian Sándor Just and Croatian Franjo Hanaman were granted a Hungarian patent (No. 34541) for a tungsten filament lamp that LASTED longer and gave BRIGHTER light than the carbon filament. Tungsten filament lamps were first marketed by the Hungarian company Tungsram in 1904.

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