Herrmann wall telephone

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Wall telephone developed by Herrmann, part of the Communication Museum in Lisbon. Herrmann wall phone.jpg
Wall telephone developed by Herrmann, part of the Communication Museum in Lisbon.

The Herrmann wall telephone, also known as the "privileged phone", was a type of telephone, created by the Portuguese inventor, Maximiliano Augusto Herrmann, in 1880. The pioneering use of buttons to activate the telephone played a fundamental role to the opening of public lines in the main cities of Portugal. [1] The telephone was composed by a double earpiece, made with long flexible tubes, and a transmitter fixed to main body of the machine. [1]

Its inventor, Maximiliano Augusto Herrmann (1832–1913), worked for the North and East Portuguese Railway Company (Portuguese : Companhia dos Caminhos-de-ferro do Norte e Leste) as telegraph lines inspector. He later opened a workshop in Lisbon dedicated to the production of precision instruments. [1]

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References

  1. 1 2 3 "PT Foundation > Home > History and Heritage > PT's History > Historical Equipment > Detail > Herrmann wall telephone". www.Fundacao.Telecom.pt. Fundação PT. 2013. Archived from the original on 4 March 2016.