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
- ^ a b c "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.
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This page was last edited on 2 May 2023, at 11:46