McCullough / Kellogg type 401 "heater" triode
date: label: date made
content: ca 1925
name: label: maker
content: Kellogg Switchboard and Supply Company
notes: label: Description (Brief)
content: A 4-pin plastic base with 2-contact top cap, getter flash, tapered envelope, silvered. Paper label handwritten: "Good". Shaw stamping on bottom of base; also "AH2". Reference: https://www.radiomuseum.org/tubes/tube_401.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Susan Horle
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.314046
label: catalog number
content: 314046
label: accession number
content: 195337
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 1 5/8 in; 13.335 cm x 4.1275 cm