Blake first commercial telephone transmitter, patent #250,126 through 250,129

Blake first commercial telephone transmitter, patent #250,126 through 250,129

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Location
Currently not on view
Object Name
Telephone Transmitter, Blake
telephone transmitter
Other Terms
Telephone Transmitter, Blake; Telephones; Transmitter; Carbon
Measurements
overall: 5 in x 10 in; x 12.7 cm x 25.4 cm
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
ID Number
EM.252612
catalog number
252612
accession number
49064
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Work and Industry: Electricity
Data Source
National Museum of American History
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