Patent model, Dolbear magneto telephone, US Patent #199,041
date: label: Date made
content: 1878
name: label: maker
content: Dolbear, Amos E.
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.308611
label: catalog number
content: 308611
label: accession number
content: 89797
label: patent number
content: 199041
objectType: label: Object Name
content: Telephone
label: Object Name
content: magneto telephone