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JOSEPH PAIMPAREY
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JOSEPH PAIMPAREY
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Application filed by JOSEPH PAIMPAREYfiledCriticalJOSEPH PAIMPAREY
Application grantedgrantedCritical
Publication of FR420995ApublicationCriticalpatent/FR420995A/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
B61L5/22—Devices for initiating the release of detonators in a certain position of a signal
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR420995D1910-10-011910-10-01Appareil à pétards pour voies ferrées
ExpiredFR420995A
(fr)