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 S MawhinneyfiledCriticalS Mawhinney
Priority to ZA716384ApriorityCriticalpatent/ZA716384B/en
Publication of ZA716384BpublicationCriticalpatent/ZA716384B/en