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Individual
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Individual
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Priority to ES0234138ApriorityCriticalpatent/ES234138A1/en
Publication of ES234138A1publicationCriticalpatent/ES234138A1/en
Machine for increasing and decreasing the diameter of rings, characterized by consisting of a body having in its vaulted upper part, a perforation for the exit of an elongated conical body, which has a series of rods attached at its top vertex by means of a spring. Spiral, said tapered body having ascending and descending movement. (Machine-translation by Google Translate, not legally binding)
ES0234138A1957-03-091957-03-09Machine to increase and decrease the diameter of rings (Machine-translation by Google Translate, not legally binding)
ExpiredES234138A1
(en)