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Acoustic telegraphy (also known as harmonic telegraphy) was a name for various methods of multiplexing (transmitting more than one) telegraph messages simultaneously over a single telegraph wire by using different audio frequencies or channels for each message.
Alexander Graham Bell (/ ˈ ɡ r eɪ. ə m /, born Alexander Bell; March 3, 1847 – August 2, 1922) [4] was a Scottish-born [N 1] 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. [7]
Alexander Graham Bell was a professor of elocution at Boston University and tutor of deaf children. He had begun electrical experiments in Scotland in 1867 and, after emigrating to Boston from Canada, pursued research into a method of telegraphy that could transmit multiple messages over a single wire simultaneously, a so-called "harmonic telegraph".
The Canadian Parliamentary Motion on Alexander Graham Bell article reviews the controversial June 2002 United States House of Representatives resolution recognizing Meucci's contributions 'in' the invention of the telephone (not 'for' the invention of the telephone). The same resolution was not passed in the U.S. Senate, thus labeling the House ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 21 December 2024. Technical and legal issues surrounding the development of the modern telephone For broader coverage of this topic, see History of the telephone. Replica of Antonio Meucci's telettrofono Reis's telephone The invention of the telephone was the culmination of work done by more than one ...
The Telephone Cases, 126 U.S. 1 (1888), were a series of U.S. court cases in the 1870s and the 1880s related to the invention of the telephone, which culminated in an 1888 decision of the U.S. Supreme Court that upheld the priority of the patents belonging to Alexander Graham Bell.
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Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company.Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois.