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Meanings of duplex telegraphy in English
We have no meanings for "duplex telegraphy" in our records yet.
Usage of duplex telegraphy in English
1
He brought out duplex telegraphy and suggested a printing telegraph for the use of gold and stock quotations.
2
This was called duplex telegraphy.
3
Edison invented duplex telegraphy by which two messages could be sent over the same wire in the same direction at the same time.
4
In 1842, he discovered, with Dr. Fisher, the principle of duplex telegraphy, and he was also the first to experiment with wireless telegraphy.