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Bell signs and notarizes his patent application for the telephone.
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Bell's U.S. patent No. 174,465 for the telephone is granted.
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They were spoken by Alexander Graham Bell, inventor of the telephone, when he made the first call on March 10, 1876, to his assistant, Thomas Watson: "Mr. Watson,come here,I want to see you."
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The Scientific American publishes the invention from Bell - at that time still without a ringer.
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(Date not exact)
First Long Distance Telephone Line -
The first commercial telephone company enters telephone business in Friedrichsberg close to Berlin using the Siemens pipe as ringer and telephone devices build by Siemens.
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(Date not exact)
Emile Berliner invented the telephone transmitter -
The first commercial US telephone exchange opened in New Haven, Connecticut.
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(Date not exact)
Tivadar Puskás introduced the multiplex switchboard. -
First U.S. coast-to-coast long-distance telephone call, ceremonially inaugurated by A.G. Bell in New York City and his former assistant Thomas Augustus Watson in San Francisco, California.