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Alexander Graham Bell was a Scottish-born Canadian-American inventor, scientist and engineer who is credited with patenting the first practical telephone. He also co-founded the American Telephone and Telegraph Company (AT&T) in 1885.
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Amos Emerson Dolbear was an American physicist and inventor. Dolbear researched electrical spark conversion into sound waves and electrical impulses. He was a professor at University of Kentucky in Lexington from 1868 until 1874. In 1874 he became the chair of the physics department at Tufts University in Medford, Massachusetts. He is known for his 1882 invention of a system for transmitting telegraph signals without wires. In 1899 his patent for it was purchased in an unsuccessful attempt to interfere with Guglielmo Marconi's wireless telegraphy patents in the United States.
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The history of AT&T dates back to the invention of the telephone. The Bell Telephone Company was established in 1877 by Alexander Graham Bell, who obtained the first US patent for the telephone, and his father-in-law, Gardiner Greene Hubbard. Bell and Hubbard also established American Telephone and Telegraph Company in 1885, which acquired the Bell Telephone Company and became the primary telephone company in the United States. This company maintained an effective monopoly on local telephone service in the United States until anti-trust regulators agreed to allow AT&T to retain Western Electric and enter general trades computer manufacture and sales in return for its offer to split the Bell System by divesting itself of ownership of the Bell Operating Companies in 1982.
The Cities of Manchester and Salford and some surrounding urban areas such as Stockport, Oldham and Bolton,, were the location of several advances in the development of telephony in the United Kingdom. A Manchester company installed the country's first regular telephone system in the city, wiring solutions which were adopted across Britain were initiated in Manchester and Stockport, the city was (arguably) the site of the UK's first telephone exchange and a service which was the forerunner of modern mobile phones was controlled from the city.
References
- Notes
- Bibliography
- Bruce, Robert V. Bell: Alexander Bell and the Conquest of Solitude. Ithaca, New York: Cornell University Press, 1990. ISBN 0-8014-9691-8.
- Pizer, Russell A. The Tangled Web of Patent #174465, AuthorHouse, 2009, ISBN 1-4389-8402-2, ISBN 978-1-4389-8402-5.
