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7 mars 1876 - Bell patents his ideas

Description:

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.

Ajouté au bande de temps:

Alexander Graham Bell

ByAlicia Gracidas-Guldan
20 déc. 2018
0
0
532

Date:

7 mars 1876
Maintenaint
~ Il y a 149 ans
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