- telegrafo multiplex
- многократный телеграф
Dictionnaire polytechnique italo-russe. 2013.
Dictionnaire polytechnique italo-russe. 2013.
Invention of the telephone — The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field. Alexander Graham Bell was the first to patent the telephone, an apparatus for transmitting vocal or other sounds… … Wikipedia