Phelps speaking telephone, patent #209,289
date: label: Date made
content: 1878
name: 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.252629
label: catalog number
content: 252629
label: accession number
content: 49064
label: patent number
content: 209289
objectType: label: Object Name
content: Telephone
label: Object Name
content: experimental telephone
label: Other Terms
content: Telephone; Telephones
physicalDescription: label: Measurements
content: overall: 4 in; x 10.16 cm
label: Measurements
content: overall: 2 in x 8 in; 5.08 cm x 20.32 cm