De Forest spherical "Audion" radio tube
date: label: Date made
content: 1914
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Frank Stanton
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2004.0251.01
label: accession number
content: 2004.0251
label: catalog number
content: 2004.0251.01
objectType: label: Object Name
content: electron tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 10 cm x 5.5 cm; 3 15/16 in x 2 3/16 in