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Category
Audiology
2
Maker
Siemens and Halske AG
1
Object type
hearing aids
2
electrical
1
fortiphone
1
hearing (aids)
1
Place
Berlin
1
New York
1
Material
microphone, plastic
2
case, leatherette
1
case, leatherette, black
1
connector, plastic
1
earpiece, aluminium
1
earpiece, metal
1
earpiece, plastic
1
hear piece, steel
1
lining, velvet, purple
1
microphone, metal
1
Date
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To
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Ear phone battery hearing aid
Ear phone battery hearing aid
Audiology
1910-1940
"Fortiphone" battery hearing aid, cased, by Siemens and Halske, Berlin, 1900-1940
"Fortiphone" battery hearing aid, cased, by Siemen
Audiology
1900-1940