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Electric incandescent lamp with ellipsoid-shaped envelope

H - Electricity – 01 – K
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Electric incandescent lamps

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Electric incandescent lamps

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Electric incandescent lamps

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Electric incandescent lamps

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Electric incandesdent lamp having a tungsten-bromine cycle

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp

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Electric lamp and an illuminating system having such an...

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Electric lamp apparatus having diffusion barrier

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Electric lamp base end structure

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Electric lamp base system

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Electric lamp base system

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Electric lamp device

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