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1 Jan 1969 Jahr - Willco
Beschreibung:
introduces the first hearing aid with a directional microphone
Zugefügt zum Band der Zeit:
History of Deaf Technology (1960-2017)
By
Aniya Smith
7 Dez 2017
0
0
3817
Datum:
1 Jan 1969 Jahr
Jetzt
~ 55 years ago
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