Edison speaking telegraph, US Patent #203,013
Edison speaking telegraph, US Patent #203,013
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- Location
- Currently not on view
- Object Name
- Speaking Telegraph
- telephone
- telephone component
- Other Terms
- Speaking Telegraph; Telephones; Transmitter
- Date made
- 1878
- maker
- Edison, Thomas Alva
- Measurements
- overall:;
- overall: 3 3/8 in x 3 1/4 in; 8.5725 cm x 8.255 cm
- ID Number
- EM.252619
- catalog number
- 252619
- accession number
- 49064
- patent number
- 203013
- See more items in
- Work and Industry: Electricity
- Data Source
- National Museum of American History
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