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Priority claimed from DE1683704Aexternal-prioritypatent/DE1683704C3/de
Priority claimed from AT985368Aexternal-prioritypatent/AT312892B/de
Application filed by Ver Baubeschlag Gretsch CofiledCriticalVer Baubeschlag Gretsch Co
Publication of ATA99973ApublicationCriticalpatent/ATA99973A/de
Application grantedgrantedCritical
Publication of AT356863BpublicationCriticalpatent/AT356863B/de