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H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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FR488316A1915-08-211916-08-21Système pour correspondre par le téléphone avec des trains de chemin de fer et véhicules similaires en marche
ExpiredFR488316A
(fr)
Perfectionnements apportés aux systèmes de freinage pour trains de chemins de fer, et, notamment, pour trains de montagnes russes et autres chemins de fer de plaisir