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Publication of FR320191ApublicationCriticalpatent/FR320191A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
B61L23/08—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only
B61L23/12—Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only partly operated by train
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FR320191D1902-04-021902-04-02Block-système automatique double pour la commande des disques et sémaphores de chemins de fer
ExpiredFR320191A
(fr)