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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.
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 ...
When the Bell telephone patents expired and many new telephone manufacturers began competing, acoustic telephone makers quickly went out of business. Their maximum range was very limited. [ 2 ] An example of one such company was the Pulsion Telephone Supply Company created by Lemuel Mellett in Massachusetts, which designed its version in 1888 ...
That first patent by Bell was the master patent of the telephone, from which other patents for electric telephone devices and features flowed. [ 12 ] In 1876, shortly after Bell's patent application, Hungarian engineer Tivadar Puskás proposed the telephone switch, which allowed for the formation of telephone exchanges , and eventually networks.
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.
Alexander Graham Bell's telephone patent [87] drawing, March 7, 1876. Meanwhile, Elisha Gray was also experimenting with acoustic telegraphy and thought of a way to transmit speech using a water transmitter. On February 14, 1876, Gray filed a caveat with the U.S. Patent Office for a telephone design that used a water transmitter. That same ...
Ever since Matt Gaetz resigned from the House — and subsequently withdrew his name from co n sideration to be President-elect Donald Trump's nominee for attorney general — questions have ...
The master telephone patent, 174465, granted to Bell, March 7, 1876 The electric telephone was invented in the 1870s, based on earlier work with harmonic (multi-signal) telegraphs . The first commercial telephone services were set up in 1878 and 1879 on both sides of the Atlantic in the cities of New Haven , Connecticut in the US and London ...