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Priority claimed from ZA00810210Aexternal-prioritypatent/ZA81210B/en
Priority claimed from ZA816796Aexternal-prioritypatent/ZA816796B/en
Application filed by A GoodyerfiledCriticalA Goodyer
Priority to ZA824239ApriorityCriticalpatent/ZA824239B/en
Publication of ZA824239BpublicationCriticalpatent/ZA824239B/en