This history of the telephone chronicles the development of the electrical telephone, and includes a brief overview of its predecessors. The first telephone patent was … See more

The telephone emerged from the making and successive improvements of the electrical telegraph. In 1804, Spanish polymath and scientist Francisco Salva Campillo constructed … See more

Credit for the invention of the electric telephone is frequently disputed, and new controversies over the issue have arisen from time to time. Antonio Meucci, Alexander Graham Bell See more

Early telephones were technically diverse. Some of them used liquid transmitters which soon went out of use. Others were dynamic: their diaphragms vibrated a coil of wire in the field … See more

Before the invention of electromagnetic telephones, mechanical acoustic devices existed for transmitting speech and music over a greater … See more

The following is a brief summary of the history of the development of the telephone:
• Early … See more

By 1904, over three million phones were connected by manual switchboard exchanges in the U.S. By 1914, the U.S. was the world … See more