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File:Edison incandescent lights.jpg

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Edison_incandescent_lights.jpg (737 × 388 pixels, file size: 84 KB, MIME type: image/jpeg)

Summary

Description
English: Photo of early paper filament incandescent electric light bulbs invented by Thomas Alva Edison in 1879. The caption read: 'Edison's famous horseshoe paper-filament lamp of 1870. Copyright 1904 by William J. Hammer.' Alterations: cropped out caption and frame, increased brightness slightly.
Date
Source Downloaded from Elmer Ellsworth Burns (1910) The Story of Great Inventions, Harper & Brothers, New York, p.123, fig.59 on Google Books.
Author William J. Hammer
Permission
(Reusing this file)		 Public domain - published in USA before 1923

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Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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Date/TimeThumbnailDimensionsUserComment
current10:39, 22 December 2007Thumbnail for version as of 10:39, 22 December 2007737 × 388 (84 KB)Chetvorno{{Information |Description=Photo of early paper filament incandescent electric light bulbs invented by Thomas Alva Edison in 1879. The caption includes: 'Copyright 1904 by William J. Hammer.' Alterations: cropped out caption and frame, increased brightn

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