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 Van Zyl NicolaasfiledCriticalJacobus Van Zyl Nicolaas
Priority to ZA887116ApriorityCriticalpatent/ZA887116B/en
Publication of ZA887116BpublicationCriticalpatent/ZA887116B/en