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Priority to ES170513ApriorityCriticalpatent/ES170513A1/en
Publication of ES170513A1publicationCriticalpatent/ES170513A1/en
ES170513A1945-07-191945-07-19
A MECHANICAL SYSTEM FOR THE AUTOMATIC CHANGE OF SPEEDS BETWEEN AN ENGINE TREE AND ANOTHER RESISTANT
ExpiredES170513A1
(en)