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 Yoon Seok HafiledCriticalYoon Seok Ha
Priority to KR8002002UpriorityCriticalpatent/KR810000577Y1/en
Application grantedgrantedCritical
Publication of KR810000577Y1publicationCriticalpatent/KR810000577Y1/en