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 plastic top cap, S-shaped envelope, partly silvered. Stamped on base: "Kellogg / Type 401 / AC Tube”. 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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.252994.015
label: accession number
content: 252994
label: catalog number
content: 252994.015
objectType: label: Object Name
content: Electron Tube Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 1 5/8 in; 13.335 cm x 4.1275 cm