Template:Selected anniversaries/July 25: Difference between revisions
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File: | File:Telegraph.jpg|link=Electrical telegraph (nonfiction)|1837: The first commercial use of an [[Electrical telegraph (nonfiction)|electrical telegraph]] is successfully demonstrated in London by William Cooke and Charles Wheatstone. | ||
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Revision as of 21:45, 17 June 2017
1837: The first commercial use of an electrical telegraph is successfully demonstrated in London by William Cooke and Charles Wheatstone.