Cunningham type C299 triode
date: label: date made
content: ca 1926
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin plastic base, short pins, tipless T-shaped envelope, getter stain. Stamped on base: "Cunningham / C-299 / Licensed only / to extent / indicated on carton". "C" logo stamped on envelope. Paper label reads: "Replace / with / Tung-Sol / Good / Fair [checked] / Bad / D. G. Erickson / Radio Service / 4303 - 15th Ave. / Rock Island, Ill. / Phone: R.I. 3549-K / Form No. 9-[??] Printed in U.S.A." 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 Franklin F. Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN79796T04
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 1 in; 8.255 cm x 2.54 cm