Hearing Aid
name: label: maker
content: General Acoustic Company
notes: label: Description
content: 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.
label: Description
content: Ref: 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 City
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-04751
label: accession number
content: 151789
label: catalog number
content: M-04751
objectType: label: Object Name
content: Hearing Aid
label: Object Name
content: hearing aid
label: Other Terms
content: Hearing Aid; Prostheses
physicalDescription: label: Physical Description
content: plastic (overall material)
label: Physical Description
content: metal (overall material)
label: Physical Description
content: fabric (overall material)
label: Physical Description
content: black (overall color)
label: Measurements
content: overall: 2.5 cm x 15 cm x 9 cm; in x 5 7/8 in x 3 9/16 in
label: Measurements
content: overall: 2 in x 6 in x 8 1/2 in; 5.08 cm x 15.24 cm x 21.59 cm