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8 résultats pour : printing telegraph

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Photograph of what is thought to be the first wireless set invented by David Edward Hughes
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Photograph of what is thought to be the first wire...

Mid-19th century Illustrations of Inventions and Discoveries
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Mid-19th century Illustrations of Inventions and ...

Samuel Finley Breese Morse
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Samuel Finley Breese Morse

Morse electric printing telegraph
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Morse electric printing telegraph

Morse electric printing telegraph
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Morse electric printing telegraph

Operator sending a message on a Morse electric printing telegraph
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Operator sending a message on a Morse electric pri...

Operator receiving a message in Morse code on printing telegraph
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Operator receiving a message in Morse code on prin...

Main station of Exchange Telegraph Company, London
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Main station of Exchange Telegraph Company, London