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.)
Filing date
Publication date
Application filed by Johan Hendrik Du PlessisfiledCriticalJohan Hendrik Du Plessis
Priority to ZA9903127ApriorityCriticalpatent/ZA993127B/en
Publication of ZA993127BpublicationCriticalpatent/ZA993127B/en