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 Long Lee ChangfiledCriticalLong Lee Chang
Priority to ZA814424ApriorityCriticalpatent/ZA814424B/en
Publication of ZA814424BpublicationCriticalpatent/ZA814424B/en