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The telephone emerged from the making and successive improvements of the electrical telegraph.In 1804, Spanish polymath and scientist Francisco Salva Campillo constructed an electrochemical telegraph. [7]
The invention of the telephone was the culmination of work done by more than one individual, and led to an array of lawsuits relating to the patent claims of several individuals and numerous companies.
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.
An old rotary dial telephone AT&T push button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone, colloquially referred to as a phone, is a telecommunications device that enables two or more users to conduct a conversation when they are too far apart to be easily heard directly.
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 Reis telephone was an invention named after Philipp Reis of a telephone-like device he constructed.Reis's first successful work is dated to October 1861. It was the first device to transmit a voice via electronic signals and for that the first modern telephone.
On February 27, 2009, CODETEL launched Claro TV, a digital TV service based on Microsoft Mediaroom for urban areas and Direct To Home Satellite for rural areas. [7] On January 20, 2011, Oscar Peña, the company's president, announced the company's brands would be unified and would become Claro as a part of a global unification across Latin America, where América Móvil's services are under ...
A man talks on his mobile phone while standing near a conventional telephone box, which stands empty. Enabling technology for mobile phones was first developed in the 1940s but it was not until the mid-1980s that they became widely available.