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David Edward Hughes

born: 16 May 1831 Corwen, Denbighshire died: 22 January 1900 London Anglo-American inventor of the carbon microphone, which used to be essential to the improvement of telephony.Hughes’smicrophone,
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Fredrik Bajer

Fredrik Bajer born: april 21, 1837, Denmark died: jan. 22, 1922, Copenhagen Denmark Danish reformer and politician, cowinner with Klas Pontus Arnoldson of the Nobel Prize
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