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Thomas Alva Edison
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Emile Berliner
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Édouard-Léon Scott de Martinville
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Firma alemanya Telefunken-AEG
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Telefunken-AEG
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Ewing Dunbar Nunn
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la casa Philips
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Sony
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kutaro Kakehashi y Dave Smith
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James Russell
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Karlheinz Brandenburg
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