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Priority claimed from DE2414172Aexternal-prioritypatent/DE2414172C2/de
Application filed by Ernst Guenter Dr IngfiledCriticalErnst Guenter Dr Ing
Publication of ATA700975ApublicationCriticalpatent/ATA700975A/de
Application grantedgrantedCritical
Publication of AT348558BpublicationCriticalpatent/AT348558B/de