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Soc Fr Munitions De Chasse
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Soc Fr Munitions De Chasse
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Publication of FR829759ApublicationCriticalpatent/FR829759A/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
B61L5/203—Detonators; Track mounting means; Composition of the detonative product
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR829759D1937-11-231937-11-23Pétard pour signalisation des voies ferrées ou autres applications
ExpiredFR829759A
(fr)