General Electric / Cunningham type C299 triode
date: label: date made
content: ca 1923
name: label: maker
content: E. T. Cunningham, Inc.
label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 4-pin brass base with ceramic insulator, short pins, tipped T-shaped envelope, getter stain. Partial paper "C" label, and a faded round paper label. Stamped on base: "Cunningham / Type C-299 / Patented / Licensed only to / extent indicated / in notice on carton". GE logo stamped on envelope. Penciled on insulator: "485 W". Reference: https://www.radiomuseum.org/tubes/tube_c299.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 Weston Electrical Instrument Corp., thru John H. Miller
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313292
label: catalog number
content: 313292
label: accession number
content: 181342
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: 3 1/4 in x 1 in; 8.255 cm x 2.54 cm