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Invention of Telephone by Alexander Bell

Published 11.11.2010 Presenter Evgenij Glazkov

Invention of Telephone by Alexander Bell
In 1870s two inventors, Elisha Gray and Alexander Graham Bell, independently from each other developed devices which could transmit speech electrically. The device was later called telephone. In November 1875 Graham Bell, an American teacher, filed an application for the device that he had invented and which could transmit sounds at a distance ...