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Application filed by South African InventionsfiledCriticalSouth African Inventions
Priority to ZA714712ApriorityCriticalpatent/ZA714712B/en
Priority to DE2234069Aprioritypatent/DE2234069A1/en
Priority to GB3337972Aprioritypatent/GB1372953A/en
Publication of ZA714712BpublicationCriticalpatent/ZA714712B/en