When was the Megaphone invented?
The Megaphone was invented in 1878 by Thomas Edison in the USA.
A cone-shaped device that amplifies the human voice by directing sound waves.
| Year invented | 1878 |
|---|---|
| Inventor | Thomas Edison |
| Country | USA |
| Category | Communication |
Who invented the Megaphone?
Thomas Edison invented the Megaphone in 1878 in the USA.
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