Hearing Aid
date: label: date made
content: 1923
name: label: maker
content: Dictograph Products Company
notes: label: Description
content: The Acousticon SRB is a carbon microphone hearing aid introduced in 1910 by the General Acoustic Company. New, it cost $40.00. This example from 1923 was donated to the Smithsonian in 1939. It has a bone conduction head piece with band attached, and amplifier. The inscriptions read “DICTOGRAPH PRODUCTS CORPORATION / NEW YORK” and “MADE IN U.S.A.” and “TYPE S.R.B.” and “148454” with patent dates of Oct. 26, 1902; Feb. 12, 1907; and Feb. 19, 1907.
label: Description
content: Ref: Howell W. Haff, “Telephone-Transmitter, U.S. Patent 874,004 (Oct. 28, 1902), assigned to General Acoustic Company.
label: Description
content: Kelley M. Turner and Norton W. Johnston, “Carbon-Ball Transmitter,” U.S. Patent 844,635 (Feb. 19, 1907), assigned to General Acoustic Co.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, New York
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Dictograph Products Company, Inc.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-04753
label: catalog number
content: M-04753
label: accession number
content: 151789
objectType: label: Object Name
content: hearing aids
label: Other Terms
content: Medicine
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 5 in x 3/4 in; 8.255 cm x 12.7 cm x 1.905 cm