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10 September 1879: Connolly and McTighe patent a "dial" telephone exchange (limited in the number of lines to the number of positions on the dial.). 1879: The International Bell Telephone Company (IBTC) of Brussels, Belgium was founded by Bell Telephone Company president Gardiner Greene Hubbard , initially to sell imported telephones and ...
Shows Bell's second telephone transmitter , invented 1876 and first displayed at the Centennial Exposition, Philadelphia. 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 granted to Alexander Graham Bell in 1869.
The telephone played a major communications role in American history from the 1876 publication of its first patent by Alexander Graham Bell onward. In the 20th century the American Telephone and Telegraph Company (AT&T) dominated the telecommunication market as the at times largest company in the world, until it was broken up and replaced by a system of competitors.
Innocenzo Manzetti. Innocenzo Manzetti considered the idea of a telephone as early as 1844, and may have made one in 1864, as an enhancement to an automaton built by him in 1849. Charles Bourseul was a French telegraph engineer who proposed (but did not build) the first design of a "make-and-break" telephone in 1854.
The focus is on the former half of history. The displays start from a replica of the communications device that Alexander Graham Bell invented - the first telephone and then meanders through the evolution of telephones, significantly covering Bell Telephone Company and American Telephone and Telegraph, which later became known as AT&T.
See: Invention of the telephone, History of the telephone, Timeline of the telephone; 1880: Telephony via lightbeam photophones; Advanced electrical and electronic signals. 1896: First practical wireless telegraphy systems based on Radio. See: History of radio. 1900: first television displayed only black and white images.
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