Invention of the MICROPHONE

On March 4th in 1877
Emile Berliner, the man behind so many inventions, came up with a thing called the microphone. Both Thomas Alva Edison and Emile Berliner filed patent applications for the carbon microphone, in March and June 1877 respectively. After a long legal battle, Edison emerged the victor, and the Berliner patent was ruled invalid by both American and British courts.

Wikipedia

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