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Individual
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Individual
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Priority to ES89042ApriorityCriticalpatent/ES89042A1/es
Publication of ES89042A1publicationCriticalpatent/ES89042A1/es
ES89042A1924-04-071924-04-07Un sistema de raíles que permite que las ruedas, en su recorrido, pasen de uno a otro rail sin solución de continuidad.
ExpiredES89042A1
(es)