Patent model, Phelps microphone transmitter, US Patent #380,925
date: label: Date made
content: 1888
name: label: maker
content: Phelps
label: maker
content: Phelps, George M.
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.308626
label: catalog number
content: 308626
label: accession number
content: 89797
label: patent number
content: 380925
objectType: label: Object Name
content: Microphone Transmitter
label: Object Name
content: microphone
label: Other Terms
content: Microphone Transmitter; Telephones; Transmitter
physicalDescription: label: Measurements
content: overall: 2 in x 5 in x 5 in; 5.08 cm x 12.7 cm x 12.7 cm