4 Free Photos of Early Incandescent Light Bulbs

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Ampoule - 2016 03
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Ampoule - 2016 01
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Light bulb by Lewis Latimer, 1883 - Museum of Science and Industry (Chicago) - DSC06448
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Light bulb, manufactured 1906, filament of tungsten and molybdenum, Swedish patent, TM6855 - Tekniska museet - Stockholm, Sweden - DSC01427
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