Sapan 3-element vacuum tube model
name: label: maker
content: Sapan Engineering Company
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Bell Telephone Laboratories
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315082.23
label: catalog number
content: 315082.23
label: accession number
content: 215003
objectType: label: Object Name
content: Vacuum Tube, Model
label: Object Name
content: vacuum tube