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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 1876.
20 March 1880: National Bell Telephone merges with others to form the American Bell Telephone Company. 1 April 1880: world's first wireless telephone call on Bell and Tainter's photophone (distant precursor to fiber-optic communications) from the Franklin School in Washington, D.C. to the window of Bell's laboratory, 213 meters away. [20] [21]
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 in 1982 and replaced by a system of competitors.
The Telephone and Its Several Inventors: A History. Jefferson, NC: McFarland & Co. Evenson, A. Edward (2000). The Telephone Patent Conspiracy of 1876: The Elisha Gray – Alexander Bell Controversy. Jefferson, NC: McFarland & Co. Fischer, Claude S. (1994) America calling: A social history of the telephone to 1940 (Univ of California Press, 1994)
The master telephone patent granted to Bell, 174465, March 7, 1876 (from History of the telephone) Image 47 A smartphone touchscreen (from Smartphone ) Image 48 Mobile payment system.
Telephone technology grew quickly after the first commercial services emerged, with inter-city lines being built and telephone exchanges in every major city of the United States by the mid-1880s. [ 17 ] [ 18 ] [ 19 ] The first transcontinental telephone call occurred on January 25, 1915.
[38] [43] In 1969 the house was carefully raised onto a flatbed mover and relocated from Brantford's downtown area (at 30, formerly 46 Sheridan Street, approximately three city blocks from the Bell Telephone Memorial), [75] to the Homestead site where it was renovated to serve as a telephone company museum. [41] The house had been donated in ...
US 597062 Calling Device for Telephone Exchange (dial) by A. E. Keith (January 11, 1898) US 687499 Telephone Transmitter (carbon granules "candlestick" microphone) by W.W. Dean (Kellogg Co.) November 26, 1901; US 815176 Automatic Telephone Connector Switch (for rotary dial phones) by A E Keith and C J Erickson March 13, 1906