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Priority claimed from DE2404267Aexternal-prioritypatent/DE2404267C2/en
Priority claimed from DE2428079Aexternal-prioritypatent/DE2428079C2/en
Application filed by Siegenia Frank KgfiledCriticalSiegenia Frank Kg
Publication of ATA949274ApublicationCriticalpatent/ATA949274A/en
Application grantedgrantedCritical
Publication of AT364271BpublicationCriticalpatent/AT364271B/en