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Priority claimed from GB40419/75Aexternal-prioritypatent/GB1520812A/en
Application filed by Lafon LaborfiledCriticalLafon Labor
Priority claimed from AT0720877Aexternal-prioritypatent/AT372063B/en
Publication of ATA649277ApublicationCriticalpatent/ATA649277A/en
Application grantedgrantedCritical
Publication of AT346828BpublicationCriticalpatent/AT346828B/en