McCullough / Kellogg type 401 "heater" triode
name: label: maker
content: Kellogg Switchboard and Supply Company
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN79705N13
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: electron tube: 13.4 cm x 4 cm; 5 1/4 in x 1 9/16 in