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 Alan Stanley DonaldsonfiledCriticalAlan Stanley Donaldson
Priority to ZA9907359ApriorityCriticalpatent/ZA997359B/en
Publication of ZA997359BpublicationCriticalpatent/ZA997359B/en