Hearing Aid

Hearing Aid

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Description
The Acousticon Model 28, a single microphone carbon bearing hearing aid, consists of a bone conduction headpiece with band, and amplifier. It was made by the Dictograph Products Company, Inc., in New York City, in 1928. This example was donated to the Smithsonian in 1939.
Ref: Kelley M. Turner and Norton W. Johnston, “Carbon-Ball Transmitter,” U.S. Patent 844,635 (Feb. 19, 1907), assigned to General Acoustic Co.
Location
Currently not on view
Object Name
hearing aids
Other Terms
Medicine
maker
Dictograph Products Company
Measurements
overall: 3 1/2 in x 1 in; 8.89 cm x 2.54 cm
ID Number
MG.M-04756
catalog number
M-04756
accession number
151789
Credit Line
Dictograph Products Company, Inc.
See more items in
Medicine and Science: Medicine
Data Source
National Museum of American History
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