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mar 7, 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.
Added to timeline:
Alexander Graham Bell
By
Alicia Gracidas-Guldan
20 Dec 2018
0
0
532
Date:
mar 7, 1876
Now
~ 149 years ago
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