Hearing Aid
notes: label: Description
content: The control device of this hearing aid was made by Centralab in the US and has a patent date of 03/13/1923 with other patents pending. The Central Radio Laboratories was established in 1922, to make parts for the nascent radio industry. Globe acquired the firm in 1925, and renamed it Centralab in 1935.
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: 2015.0172.05
label: catalog number
content: 2015.0172.05
label: accession number
content: 2015.0172
objectType: label: Object Name
content: hearing aid
physicalDescription: label: Measurements
content: overall: 1 in x 11 3/4 in x 9 in; 2.54 cm x 29.845 cm x 22.86 cm