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 Shao Kuang HuangfiledCriticalShao Kuang Huang
Priority to ZA9901475ApriorityCriticalpatent/ZA991475B/en
Publication of ZA991475BpublicationCriticalpatent/ZA991475B/en