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Priority claimed from DE19752507555external-prioritypatent/DE2507555A1/de
Application filed by Wuelfing Johann AfiledCriticalWuelfing Johann A
Priority to AT257477ApriorityCriticalpatent/AT343679B/de
Publication of ATA257477ApublicationCriticalpatent/ATA257477A/de
Application grantedgrantedCritical
Publication of AT343679BpublicationCriticalpatent/AT343679B/de