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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1895 año - 1895 - The first hearing aid, or "akouphone" was invented.
Añadido al timeline:
Otto Hahn
By
Robbie Winfield
12 nov 2019
1
0
416
fecha:
1 ene 1895 año
Ahora mismo
~ 130 years ago
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