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Application filed by Kapsch Telephon TelegraphfiledCriticalKapsch Telephon Telegraph
Priority to AT543074ApriorityCriticalpatent/AT331340B/de
Publication of ATA543074ApublicationCriticalpatent/ATA543074A/de
Application grantedgrantedCritical
Publication of AT331340BpublicationCriticalpatent/AT331340B/de