File:Edison incandescent lights.jpg

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A 1904 photo of early paper filament incandescent electric light bulbs invented by Thomas Alva Edison - Image by William J. Hammer

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current18:46, 6 February 2012Thumbnail for version as of 18:46, 6 February 2012737 × 388 (84 KB)Beichner (talk | contribs)
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