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 Jacobus Cordier DawidfiledCriticalJacobus Cordier Dawid
Priority to ZA906309ApriorityCriticalpatent/ZA906309B/en
Publication of ZA906309BpublicationCriticalpatent/ZA906309B/en