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THEODORE FRANCOIS DEMEYER
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THEODORE FRANCOIS DEMEYER
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Application filed by THEODORE FRANCOIS DEMEYERfiledCriticalTHEODORE FRANCOIS DEMEYER
Application grantedgrantedCritical
Publication of FR405006ApublicationCriticalpatent/FR405006A/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)
FR405006D1909-07-121909-07-12Écrase-pétards pour signaux de chemins de fer
ExpiredFR405006A
(fr)