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 plastic 5-pin base with top contact, silvered S-shaped envelope. Donor’s card reads: “Receiving tube made by Philips of Holland.” See: 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
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324741
label: catalog number
content: 324741
label: accession number
content: 252994
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: 5 1/4 in x 1 7/8 in; 13.335 cm x 4.7625 cm