Connecticut type J117 gas triode - detector
date: label: date made
content: ca 1920
name: label: maker
content: Connecticut Telephone & Electric Company
notes: label: Description (Brief)
content: A glass cylinder with a plastic knurled knob and brass cap on one end, and a brass cap with insulated pin on the other end. Stamped on one cap: "Connecticut / Vacuum Tube Detector / Type J-117 Made in U.S.A."; on the other cap: "Pat'd Jan. 14. 1919 Others / Pending. In Canada & / Principal Foreign Countries. See Gerald Tyne, "Saga of the Vacuum Tube," pages 336-339.
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 Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.241556.572
label: accession number
content: 241556
label: catalog number
content: 241556.572
objectType: label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 7/8 in; 10.795 cm x 2.2225 cm