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 Telecommunications Object Thesaurus Term

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telephone instrument


Plural:
telephone instruments

Initial Reference:
The Modern Applications of Electricity, by Hospitalier - 1877

Top term:

Broader term:

Scope notes:
Device for converting speech into and from another form for two-way transmission over a distance. For the purposes of this thesaurus this term refers only to electrical devices. For string telephones see acoustic telegraph.



 
 



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