File:Weston Electric Lighting Co. incandescent light, sinusoidal filament, c. 1885 - DSC06551.JPG

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Description Light bulb exhibited in the Franklin Institute, Philadelphia, Pennsylvania, USA.
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Source Self-photographed
Author Daderot
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Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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Date/TimeThumbnailDimensionsUserComment
current10:33, 25 October 2011Thumbnail for version as of 10:33, 25 October 20113,240 × 4,320 (4.67 MB)Daderot (talk | contribs)

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