Hearing Aid
Hearing Aid
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- Description
- Inscriptions on this early carbon microphone hearing aid read in part “GENERAL ACOUSTIC CO. / NEW YORK” and “PATENTED IN THE UNITED STATES OCT... FEB. 19, 07.” By 1906, the General Acoustic Co. was advertising as successors to Hutchison Acoustic Co.
- 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 Aid
- hearing aid
- Other Terms
- Hearing Aid; Prostheses
- maker
- General Acoustic Company
- place made
- United States: New York, New York City
- Physical Description
- plastic (overall material)
- metal (overall material)
- fabric (overall material)
- black (overall color)
- Measurements
- overall: 2.5 cm x 15 cm x 9 cm; in x 5 7/8 in x 3 9/16 in
- overall: 2 in x 6 in x 8 1/2 in; 5.08 cm x 15.24 cm x 21.59 cm
- ID Number
- MG.M-04751
- accession number
- 151789
- catalog number
- M-04751
- 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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