"Sodion" type D21 gas triode
date: label: date made
content: 1924
name: label: maker
content: Connecticut Telephone & Electric Company
notes: label: Description (Brief)
content: "Sodion" type D-21 gas triode detector with a 4-pin plastic base, tipless T-shaped frosted envelope. Molded on base: "Connecticut Tel.&Elec.Co. / Meriden.Conn.U.S.A. / Pat.Dec.18.1923." Stamped on envelope: "Sodion / D-21". Reference:https://www.radiomuseum.org/tubes/tube_d21.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 Hallam E. Mendenhall
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0695.40
label: catalog number
content: 1988.0695.40
label: accession number
content: 1988.0695
objectType: label: Object Name
content: triode
physicalDescription: label: Physical Description
content: manufactured (overall style)
label: Physical Description
content: molded (overall production method/technique)
label: Measurements
content: overall: 3 3/4 in x 1 1/4 in; 9.525 cm x 3.175 cm