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 Yi-Biau Chen, Ming-Fu Huang, Shr-Shi WangfiledCriticalYi-Biau Chen
Priority to TW89218673UpriorityCriticalpatent/TW491468U/en
Publication of TW491468UpublicationCriticalpatent/TW491468U/en