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 Wai Po ChufiledCriticalWai Po Chu
Priority to HK98111838ApriorityCriticalpatent/HK1019285A2/en
Publication of HK1019285A2publicationCriticalpatent/HK1019285A2/en