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 Graham Noel AbrahamsfiledCriticalGraham Noel Abrahams
Priority to ZA853547ApriorityCriticalpatent/ZA853547B/en
Publication of ZA853547BpublicationCriticalpatent/ZA853547B/en