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 P Van RooyfiledCriticalP Van Rooy
Priority to ZA757029ApriorityCriticalpatent/ZA757029B/en
Publication of ZA757029BpublicationCriticalpatent/ZA757029B/en