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Individual
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Individual
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Priority to ES2631ApriorityCriticalpatent/ES2631A1/es
Publication of ES2631A1publicationCriticalpatent/ES2631A1/es
ES2631A1882-08-111882-08-11Mejoras en el mecanismo para variar la distancia de las ruedas de ferrocarriles o de otras vías permanentes.
ExpiredES2631A1
(es)
Perfeccionamientos introducidos en los aparatos destinados a la realización completa de la explotación de vías férreas por secciones, conocido con el nombre de "Block-sistema".