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Priority claimed from DE2545463Aexternal-prioritypatent/DE2545463C2/en
Priority claimed from DE2617760Aexternal-prioritypatent/DE2617760C2/en
Application filed by Vakuum Vulk Holdings LtdfiledCriticalVakuum Vulk Holdings Ltd
Publication of ATA909677ApublicationCriticalpatent/ATA909677A/en
Application grantedgrantedCritical
Publication of AT356530BpublicationCriticalpatent/AT356530B/en