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ES5545A1885-12-171885-12-17Mejoras en los aparatos guarda-vidas y limpiadores de los raíles de los tranvías aplicados a los carruajes de los mismos.
ExpiredES5545A1
(es)
Perfeccionamientos introducidos en los aparatos destinados a aumentar la seguridad de la circulación de los trenes sobre las líneas de los ferrocarriles.