Patent model for Edison speaking telephone, US Patent #208299
date: label: Date made
content: 1877
name: label: maker
content: Edison, Thomas Alva
notes: label: Description (Brief)
content: Second of two models to accompany the application for US Patent #208299, "Speaking Telephone," issued 24 September 1878 to Thomas A. Edison. One instrument mounted horizontally on a wooden base, with brass diaphragm and double contacts outside.
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.252622.2
label: catalog number
content: 252622.2
label: accession number
content: 49064
label: patent number
content: 208299
objectType: label: Object Name
content: Telephone Set
label: Other Terms
content: Telephone Set; Telephones
physicalDescription: label: Measurements
content: overall: 4 in x 7 1/2 in x 5 in; 10.16 cm x 19.05 cm x 12.7 cm