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 O Y ChoifiledCriticalO Y Choi
Priority to KR7705769UpriorityCriticalpatent/KR790000244Y1/en
Application grantedgrantedCritical
Publication of KR790000244Y1publicationCriticalpatent/KR790000244Y1/en