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LEVI ROBERT ALBERT
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LEVI ROBERT ALBERT
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Publication of FR937EpublicationCriticalpatent/FR937E/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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Mechanical Engineering
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FR937D1902-09-091902-09-30Système de bloc automatique pour éviter les collisions des trains en marche sur les chemins de fer
ExpiredFR937E
(fr)