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B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
B61L3/16—Continuous control along the route
B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
B61L3/221—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using track circuits
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FR803096D1936-01-141936-03-10Dispositif répétiteur des signaux de chemins de fer à bord des locomotives ou autres véhicules se déplaçant sur la voie
ExpiredFR803096A
(fr)