Patent model, Phelps microphone transmitter, US Patent #380,925

Date Made: 1888

Maker: PhelpsPhelps, George M.

Location: Currently not on view

See more items in: Work and Industry: Electricity


Exhibition Location:

Data Source: National Museum of American History

Id Number: EM.308626Catalog Number: 308626Accession Number: 89797Patent Number: 380925

Object Name: Microphone TransmittermicrophoneOther Terms: Microphone Transmitter; Telephones; Transmitter

Measurements: overall: 2 in x 5 in x 5 in; 5.08 cm x 12.7 cm x 12.7 cm


Record Id: nmah_703439

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