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Priority claimed from GB2514/76Aexternal-prioritypatent/GB1575601A/en
Application filed by Didier Werke AgfiledCriticalDidier Werke Ag
Priority to AT550978ApriorityCriticalpatent/AT361148B/en
Publication of ATA550978ApublicationCriticalpatent/ATA550978A/en
Application grantedgrantedCritical
Publication of AT361148BpublicationCriticalpatent/AT361148B/en