De Forest / Bureau of Steam Engineering two-stage amplifier
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
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.317746
label: catalog number
content: 317746
label: accession number
content: 233317
objectType: label: Object Name
content: amplifier
physicalDescription: label: Measurements
content: overall: 9 in x 7 in x 6 in; 22.86 cm x 17.78 cm x 15.24 cm