Blake first commercial telephone transmitter, patent #250,126 through 250,129
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.252612
label: catalog number
content: 252612
label: accession number
content: 49064
objectType: label: Object Name
content: Telephone Transmitter, Blake
label: Object Name
content: telephone transmitter
label: Other Terms
content: Telephone Transmitter, Blake; Telephones; Transmitter; Carbon
physicalDescription: label: Measurements
content: overall: 5 in x 10 in; x 12.7 cm x 25.4 cm
label: Measurements
content: overall: 4 1/2 in x 5 1/4 in x 9 3/4 in; 11.43 cm x 13.335 cm x 24.765 cm