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7 März 1876 Jahr - Bell patents his ideas

Beschreibung:

Bell receives The U.S. Patent Office patent number 174,465. It allowed him to have his machine transmit sound waves telegraphically without others copying his ideas.

Zugefügt zum Band der Zeit:

Alexander Graham Bell

ByAlicia Gracidas-Guldan
20 Dez 2018
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0
532

Datum:

7 März 1876 Jahr
Jetzt
~ 149 years ago
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