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These made telephones an available and comfortable communication tool for many purposes, and it gave the impetus for the creation of a new industrial sector. The telephone exchange was an idea of the Hungarian engineer Tivadar Puskás (1844–1893) in 1876, while he was working for Thomas Edison on a telegraph exchange.
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.
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.
3G Phones and Other Devices. 2001-2022. ... But that year in China, Yi Xing invented the first known alarm clock, ... 1876-2017 Alexander Graham Bell revolutionized human communication when he ...
11 February 1876: Elisha Gray invents a liquid transmitter for use with a telephone, but he did not make one. 14 February 1876 about 9:30 am: Gray or his lawyer brings Gray's patent caveat for the telephone to the Washington, D.C. Patent Office (a caveat was a notice of intention to file a patent application.
His research on hearing and speech further led him to experiment with hearing devices, which eventually culminated in his being awarded the first U.S. patent for the telephone, on March 7, 1876. [N 2] Bell considered his invention an intrusion on his real work as a scientist and refused to have a telephone in his study. [9] [N 3]
This led to a public demonstration of the improved device on 26 January 1926 again at Selfridges. His invention formed the basis of semi-experimental broadcasts done by the British Broadcasting Corporation beginning September 30, 1929. [34] For most of the twentieth century televisions used the cathode ray tube (CRT) invented by Karl Braun.
In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business , government , and in households .