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PIO ALBERTI
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PIO ALBERTI
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Publication of FR423714ApublicationCriticalpatent/FR423714A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L13/00—Operation of signals from the vehicle or by the passage of the vehicle
B61L13/04—Operation of signals from the vehicle or by the passage of the vehicle using electrical or magnetic interaction between vehicle and track, e.g. by conductor circuits using special means or special conductors
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR423714D1910-10-181910-10-18Système de signaux pour empecher la collision de trains
ExpiredFR423714A
(fr)