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Значения термина quadruplex system на английском

Значения для термина "quadruplex system" отсутствуют.
Использование термина quadruplex system на английском
1
Edison's quadruplex system was also adopted by the British lines.
Masters of Space / Morse and the Telegraph; Thompson and the Cab...
2
Gould paid for the quadruplex system thirty thousand dollars, but for the automatic telegraph he paid nothing.
The Age of Invention: A Chronicle of Mechanical Conquest
3
For his quadruplex system, Mr. Edison utilized this fact in the construction of a rheostat or resistance box.
Edison: His Life and Inventions
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