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Application filed by Kapsch Telephon TelegraphfiledCriticalKapsch Telephon Telegraph
Priority to AT726573ApriorityCriticalpatent/AT327995B/de
Publication of ATA726573ApublicationCriticalpatent/ATA726573A/de
Application grantedgrantedCritical
Publication of AT327995BpublicationCriticalpatent/AT327995B/de