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Publication of BE508621ApublicationCriticalpatent/BE508621A/fr
H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
Schaltungsanordnung zur synchronen Steuerung von zwei an verschiedenen Orten befindlichen Schrittschalteinrichtungen unter Verwendung einer einzigen Steuerader zwischen beiden Orten
Dispositif de controle du demarrage d'une machine dangereuse et de protection au voisinage d'une telle machine et procede de demarrage d'une telle machine