Duotone Hearing Aid
date: label: date made
content: ca 1930
name: label: maker
content: Siemens & Halske
notes: label: Description
content: Duotone hearing aid, serial #1441 given to the Smithsonian in 1945. The Duotone was introduced to the U.S. market in 1927:
label: Description
content: “Two German scientists of world renown, Dr. K. W. Hausser and Dr. Helmut Sell, have at last seen their efforts to produce hearing aids of the highest refinement, compactness and efficiency rewarded with success. The great research laboratories of Siemens & Halske, of Berlin, the largest and foremost manufacturers of electro-medical and electro-acoustic apparatus in the world, have played no small part in this triumph. Years of exhaustive study and experimentation have now been crowned with the production of an entirely new type of hearing aid embodying scientific principles, never before employed in this field.”
label: Description
content: Ref: “A Message to the Deaf,” in <i>New York Times</i> (Sept. 11, 1927), p. SM22.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Sonotone Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-05270
label: catalog number
content: M-05270
label: accession number
content: 169582
objectType: label: Object Name
content: hearing aids
label: Other Terms
content: Medicine
physicalDescription: label: Measurements
content: overall: 3 in x 4 in x 5 in; 7.62 cm x 10.16 cm x 12.7 cm