De Forest type CF-340 "Oscillion" transmitting triode
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 the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320221
label: catalog number
content: 320221
label: accession number
content: 188571
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Object Name
content: vacuum tube
label: Object Name
content: electron tube
physicalDescription: label: Measurements
content: overall: 12 3/4 in x 3 in; 32.385 cm x 7.62 cm