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 重慶文理學院filedCritical重慶文理學院
Priority to HK18112538.4ApriorityCriticalpatent/HK1253249A1/en
Publication of HK1253249A1publicationCriticalpatent/HK1253249A1/en