Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by G VisagiefiledCriticalG Visagie
Priority to ZA00747931ApriorityCriticalpatent/ZA747931B/en
Priority to CA241,801Aprioritypatent/CA1033399A/en
Priority to US05/639,976prioritypatent/US4034200A/en
Publication of ZA747931BpublicationCriticalpatent/ZA747931B/en