Science, Technology & Medicine

Sonotone 1010 hearing aid
The first commercial product to use a transistor (1952)
Sonotone 1010 hearing aid

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Posted by david gilliland at 6:44 pm (PST) on Sat November 15, 2014   
My mother is 90 years old and has worn a hearing aid since she was 10, she had a double mastoid operation (from scarlet fever) which removed all ear conponents. She wore Sonotone hearing aids for years. I am looking for a behind the ear vibrating hearing aid which has been obsolete. The one she has is wery old and I would love to find her a new or rebuilt or used one, please respond if you have ANY information, thankyou

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