5 December 1879 was patented in the US pershuavtomatychnu telephone exchange,,uk,ATS,,sr,Round telegraph T-52,,uk,GDR,,mn,was born in Chernihiv Mikhail Mohyliansky,,uk (АТС).
Рулонний телеграфний апарат Т-52. ГДР. 1952 рік. Музейне зібрання
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