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 Shiu Cheong Boris YipfiledCriticalShiu Cheong Boris Yip
Priority to HK01102671ApriorityCriticalpatent/HK1033532A2/en
Publication of HK1033532A2publicationCriticalpatent/HK1033532A2/en