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B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
B61L25/06—Indicating or recording the setting of track apparatus, e.g. of points, of signals
B61L25/065—Indicating or recording the setting of track apparatus, e.g. of points, of signals for signalling systems on the vehicle using current conduction
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FR465881D1913-12-081913-12-08
Movement control and signaling system for railway trains
ExpiredFR465881A
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