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MINES DE DOURGES SOC D
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MINES DE DOURGES SOC D
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Application grantedgrantedCritical
Publication of FR753518ApublicationCriticalpatent/FR753518A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR753518D1933-03-311933-03-31Dispositif pour la manceuvre des aiguilles d'une traversée-jonction double
ExpiredFR753518A
(fr)