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Priority to JP47083786ApriorityCriticalpatent/JPS5146238B2/ja
Publication of JPS4938088ApublicationCriticalpatent/JPS4938088A/ja
Publication of JPS5146238B2publicationCriticalpatent/JPS5146238B2/ja
Sistema perfezionato per il control lo elettronico del traffico in tempo reale e per trasmissioni bidirezionali in codice e fonia fra centrale operativa e mezzi mobili