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 A ScheltensfiledCriticalA Scheltens
Priority to ZA00781214ApriorityCriticalpatent/ZA781214B/en
Publication of ZA781214BpublicationCriticalpatent/ZA781214B/en