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Improvements in the methods of manufacturing electric cables, consisting essentially of guiding the active conductors of the cable through the spiral machines so that they constitute the winding core for the cable on which the neutral conductor is wound or of earth and a safety conductor isolated in alternating and butt turns, finally covering the assembly with a shielding sheath. (Machine-translation by Google Translate, not legally binding)
Combined transformer for intensity and voltage, with open ferromagnetic nucleus for tension (Machine-translation by Google Translate, not legally binding)