"Oticon T4" transistor hearing aid

Made:
1955-1965 in Copenhagen

"Oticon T4" transistor hearing aid, by the American Danish Oticon Corporation, Denmark, 1955-1965

Details

Category:
Audiology
Collection:
Sir Henry Wellcome's Museum Collection
Object Number:
A602530
Materials:
case, steel, chrome plate and frame, plastic
type:
hearing aids
credit:
Bailey, A. Optical Mission