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The Gallery of Technological wonders
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Telephone
With the invention of the telephone by Philipp Reis and the improvements made by Alexander G. Bell and David E. Hughes it became possible to transmit the human voice by electrical means. Werner von Siemens took up this unique idea and constructed his own apparatus in 1877.
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Siemens S.p.A. 1999 - Milano
Communication and Marketing
Reproduction and use of the images and texts are prohibited.
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