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Wheatstone telegraph
Also known as Cooke and Wheatstone telegraph. Invented in the 1830s. It was also the first telegraph system that was instrumental in catching murderer John Tawell.
From: Louis Thomas, Kosmos für die Jugend: Die Denkwürdigsten Erfindungen Im neunzehnten Jahrhundert (1877)
From: Louis Thomas, Kosmos für die Jugend: Die Denkwürdigsten Erfindungen Im neunzehnten Jahrhundert (1877)
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