US&S type 239 electron tube
date: label: date made
content: ca 1930
name: label: associated person
content: Ruckelshaus, John Greer
label: maker
content: Union Switch and Signal Company
notes: label: Description (Brief)
content: Union Switch & Signal type 239 vacuum tube. A 6-pin plastic base with domed envelope. Stamped on base: "PC279239 / U.S.&S. / Made in U.S.A. / 3226524-3"; on envelope: "SS / 239 / U.S.A.5". Written on mica insulators: "03" and "2362".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from John G. Ruckelshaus
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2004.0139.04
label: accession number
content: 2004.0139
label: catalog number
content: 2004.0139.04
objectType: label: Object Name
content: Electron Tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm