Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Application grantedgrantedCritical
Publication of FR623016ApublicationCriticalpatent/FR623016A/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
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR623016D1926-02-151926-02-15Dispositif de slgnalisation semi-automatique pour l'arrêt des convois sur voies ferrées
ExpiredFR623016A
(fr)