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Publication of FR668459ApublicationCriticalpatent/FR668459A/fr
B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
B61L7/08—Circuitry
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FR668459D1928-01-271929-01-26Procédé et installation pour la manoeuvre électrodynamique des aiguillages, signaux et analogues de chemins de fer
ExpiredFR668459A
(fr)