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 Kang Yung SongfiledCriticalKang Yung Song
Priority to KR7703887UpriorityCriticalpatent/KR780000971Y1/en
Application grantedgrantedCritical
Publication of KR780000971Y1publicationCriticalpatent/KR780000971Y1/en