Philips type E442 "Miniwatt" screen grid tetrode
date: label: date made
content: ca 1929
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A 4-pin brown plastic base (banana pins) with side contact wired to form a fifth (center) pin on bottom. Tipped S-shaped envelope. Broken cap on top. Stamped: "Philips / E442 / 4V Miniwatt 200V". Paper label with Groenendijk Collection #5m-55. Reference: https://www.radiomuseum.org/tubes/tube_e442.html.
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: EM.315586
label: catalog number
content: 315586
label: accession number
content: 216300
label: collector/donor number
content: 5m-55
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm