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 Christensen Inc NortonfiledCriticalChristensen Inc Norton
Priority to ZA842011ApriorityCriticalpatent/ZA842011B/en
Publication of ZA842011BpublicationCriticalpatent/ZA842011B/en