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Publication of FR351026ApublicationCriticalpatent/FR351026A/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
B61L5/20—Audible signals, e.g. detonator audible signalling
B61L5/24—Replacement of detonators
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FR351026D1905-01-261905-01-26Dispositif pour poser ou écarter les pétards le long des voies de chemins de fer
ExpiredFR351026A
(fr)