Engraving by Kohl. The American scientist and inventor Thomas Alva Edison (1847-1931) redesigned the telephone shortly after its invention by Alexander Graham Bell (1847-1922) in 1876. Edison was also the inventor of the phonograph and the electric light bulb. Illustration from 'Electricity and Magnetism' by Amedee Guillemin (1826-1893), published in London in 1891.
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