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Priority claimed from DE2402908Aexternal-prioritypatent/DE2402908C2/de
Priority claimed from AT929674Aexternal-prioritypatent/AT338286B/de
Application filed by Wuelfing Johann AfiledCriticalWuelfing Johann A
Priority to AT243276ApriorityCriticalpatent/AT338821B/de
Publication of ATA243276ApublicationCriticalpatent/ATA243276A/de
Application grantedgrantedCritical
Publication of AT338821BpublicationCriticalpatent/AT338821B/de