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Priority to JP6527476ApriorityCriticalpatent/JPS52147819A/ja
Publication of JPS52147819ApublicationCriticalpatent/JPS52147819A/ja
Publication of JPS5534017B2publicationCriticalpatent/JPS5534017B2/ja
Dispositivo per il monitoraggio dello stato aperto o chiuso di una linea elettrica di un veicolo ferroviario e linea elettrica di un veicolo ferroviario