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INVESTA A G fur FORSCHUNG und
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INVESTA A G fur FORSCHUNG und
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Publication of ES239516A1publicationCriticalpatent/ES239516A1/en
Device for the multiple twisting of several threads according to the principle of the double twist spindle, consisting of a vertical coil attached and said spindle, with several rotating coil supports and central holes, by means of which they are conducted towards the rotor each one of the wires from the respective coils. (Machine-translation by Google Translate, not legally binding)
ES0239516A1957-02-041958-01-11A device for multiple returns of various threads (Machine-translation by Google Translate, not legally binding)
ExpiredES239516A1
(en)