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Individual
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Individual
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Priority to ES33757ApriorityCriticalpatent/ES33757A1/es
Publication of ES33757A1publicationCriticalpatent/ES33757A1/es
ES33757A1904-04-071904-04-07Mejoras en dispositivos para la maniobra de las agujas y cambios de vía en las líneas de ferrocarriles y tranvías.
ExpiredES33757A1
(es)
Mejoras en los medios empleados para hacer funcionar las agujas de los ferrocarriles y tranvías, los mecanismos de señales y demás disposiciones análogas.