This year we celebrate 170 anniversary of Grigory G. Ignatiev – the Russian engineer-electrician, who developed the system of simultaneous telephony and telegraphy via singular cable.
For citation:
170 anniversary of the Russian engineer-electrician Grigory G. Ignatiev. КИП и автоматика: обслуживание и ремонт №5 2016. 2016;5.
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