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Topic: Biographies
Number of pages / Number of words: 4 / 857
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In September 1875 he began to write the specifications for the telephone. He had developed the "harmonic telegraph" which could send more than one message at a time over a single telegraph wire. On March 7, 1876, the U.S. Patent Office granted him Patent Number 174,465 covering, the method of, and apparatus for, transmitting vocal or other sounds telegraphically...


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On March 7, 1876, the U.S. Patent Office granted him Patent Number 174,465 covering, the method of, and apparatus for, transmitting vocal or other sounds telegraphically...by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds.

In the wake of Bell's invention of the telephone came an avalanche of patent lawsuits and corporate maneuvers...


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