Timeline of the Telephone
Category: Otro
Actualizado: 15 jun 2022
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Created byOscar Dennis
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Eventos
The Telephone is patented.Elisha Gray submits a caveat to the U.S. patent office.Elisha Gray reveals his new invention: a telephone based on a liquid transmitter.George W. Coy designs and builds the first commercial telephone exchange.Bell submits his telephone patent for review by the U.S. patent office.Edison patents the carbon microphone in mid-1877.First commercial telephone line across the Atlantic Ocean is tested.The first push-button telephone was made available to the public.Martin Cooper makes a cellular-phone call to Dr. Joel S. Engel.The first 1G telephone network was launched in Japan by Nippon Telegraph and Telephone.First commercial handheld phone (Motorola's DynaTAC 8000x) is approved by the United States Federal Communications Commission.The first touchscreen phone (IBM Simon) is released by Mitsubishi Electric.First camera phone is released. (Kyocera's VP-210)Períodos
Western Electric prototypes and produces the model 102 telephone.
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