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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.
Because of illness and other commitments, Bell made little or no telephone improvements or experiments for eight months until after his U.S. patent 174,465 was published., [26] but within a year the first telephone exchange was built in Connecticut and the Bell Telephone Company was created in 1877, with Bell the owner of a third of the shares ...
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.
the first wireless telephone message in the history of the world. the apparatus used in sending the message was the photophone invented by alexander graham bell inventor of the telephone this plaque was placed here by alexander graham bell chapter telephone pioneers of america march 3, 1947 the centennial of dr. bell's birth
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".
As phone lines became more popular—between 1942 and 1962, the number of phones in the U.S. grew 230% to 76 million—telephone companies realized they would run out of phone numbers.
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]
On January 25, 1915, Watson was at 333 Grant Avenue in San Francisco to receive the first transcontinental telephone call, placed by Bell from the Telephone Building at 15 Dey Street in New York City. President Woodrow Wilson and the mayors of both cities were also involved in the call. [15] Thomas Watson was married to Elizabeth Watson.