Hearing Aid
date: label: date made
content: 1936-1938
notes: label: Description
content: William J. Sullivan, dba the National Electrical Research and Mfg. Co. in Washington, D.C., introduced the term Tel-Audio in February 1936 and obtained a trademark later that year. His first and perhaps only product was a large, vacuum-tube, table-top hearing aid with a t-coil. The case of this example may be made of bakelite. The firm apparently went out of business in 1938.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Medicine
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2015.0172.03
label: catalog number
content: 2015.0172.03
label: accession number
content: 2015.0172
objectType: label: Object Name
content: Hearing Aid, Telaudio
label: Object Name
content: hearing aid
label: Other Terms
content: Hearing Aid, Telaudio; Medicine
physicalDescription: label: Measurements
content: overall: 8 in x 8 in x 5 1/2 in; 20.32 cm x 20.32 cm x 13.97 cm