De Forest "Ultra Audion" and amplifier type P-2
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the General Electric Research Laboratory, thru Miles J. Martin
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315250
label: catalog number
content: 315250
label: accession number
content: 218872
label: patent number
content: 836070
label: patent number
content: 879532
label: patent number
content: 841387
label: patent number
content: 841387
label: patent number
content: 979275
objectType: label: Object Name
content: Amplifier
label: Object Name
content: radio receiver
label: Other Terms
content: Amplifier; Radio
physicalDescription: label: Measurements
content: overall: 13 1/8 in x 9 3/8 in x 20 3/4 in; 33.3375 cm x 23.8125 cm x 52.705 cm