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Who invented the telephone?
The birth of Alexander Graham Bell. -
Where did he arrive?
Alexander Graham Bell arrived in Boston where he worked with the deaf.
The picture represents the school of the deaf the Mr. Bell worked at. -
Theory
Bell's theory of the telephone was confirmed. -
the first telephone patent to Alexander Graham Bell
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First complete sentence of speech transmitted by telephone in Boston
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Bell conducted the first successful experimental two-way talk over the telephone between Boston and Com-bridgeport, Mass., distance of 2 miles
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First commercial telephone exchange in the world
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opening of the telephone service
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Incorporation of American Telephone and Telegraph Company, New York City.
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Opening of long distance telephone service, New York to Chicago, 950 miles.
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The under-ground telephone cable placed in commercial service
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Opening of First Trans-continental telephone line
