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Blanche
11 March, 01:07
Who invented the speaker?
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Mira Mclaughlin
11 March, 02:19
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Alexander Graham Bell patented his first electric loudspeaker (capable of reproducing intelligible speech) as part of his telephone in 1876, which was followed in 1877 by an improved version from Ernst Siemens.
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Roderick Koch
11 March, 02:38
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Alexander Graham Bell
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Alexander Graham Bell
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