Search results
Results From The WOW.Com Content Network
The master telephone patent granted to Bell, 174465, March 10, 1876. The modern telephone is the result of the work of many people. [10] Alexander Graham Bell was, however, the first to patent the telephone, as an "apparatus for transmitting vocal or other sounds telegraphically".
10 August 1876: Alexander Graham Bell makes the world's first long-distance telephone call, one-way, not reciprocal, over a distance of about 6 miles, between Brantford and Paris, Ontario, Canada. 1876: Hungarian Tivadar Puskás invents the telephone switchboard exchange (later working with Edison).
Innocenzo Manzetti. Innocenzo Manzetti considered the idea of a telephone as early as 1844, and may have made one in 1864, as an enhancement to an automaton built by him in 1849. Charles Bourseul was a French telegraph engineer who proposed (but did not build) the first design of a "make-and-break" telephone in 1854.
An old rotary dialtelephoneAT&Tpush button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone, colloquially referred to as a phone, is a telecommunicationsdevice that permits two or more users to conduct a conversationwhen they are too far apart to be easily heard directly. A telephone converts sound, typically and most ...
a Boston University (see below ). b See below. c Two died soon after birth. Alexander Graham Bell ( / ˈɡreɪ.əm /, 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 photophone is a telecommunications device that allows transmission of speech on a beam of light. It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C. [ 1][ 2] Both were later to become full associates in the Volta Laboratory ...
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 and replaced by a system of competitors.
In the 1930s, wirephoto machines of any reasonable speed were very large and expensive and required a dedicated phone line. News media firms like Associated Press used expensive leased telephone lines to transmit wirephotos. In the mid-1930s a technology battle began for less expensive portable wirephoto equipment that could transmit photos ...