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Priority to ES215904ApriorityCriticalpatent/ES215904A1/es
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ES215904A1954-06-111954-06-11Un aparato para mejorar el tensado de alambres en la construcción de elementos de hormigón precomprimido
ExpiredES215904A1
(es)
PERFECCIONAMIENTOS EN LAS UNIONES FLEXIBLES PARA PERFILES ALOJADOS UNOS EN OTROS EN EL MISMO SENTIDO, PREFERENTEMENTE A MODO DE HIERROS ZORÉS, Y ESPECIALMENTE PARA EL REVESTIMIENTO DE GALERiAS EN EL SERVICIO MINERO