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Application filed by Kapsch Telephon TelegraphfiledCriticalKapsch Telephon Telegraph
Priority to AT438476ApriorityCriticalpatent/AT349062B/de
Publication of ATA438476ApublicationCriticalpatent/ATA438476A/de
Application grantedgrantedCritical
Publication of AT349062BpublicationCriticalpatent/AT349062B/de