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 Dong Bang Steel Iron Mfg Co Lt, Yung Chung KimfiledCriticalDong Bang Steel Iron Mfg Co Lt
Priority to KR7706441UpriorityCriticalpatent/KR780001339Y1/en
Application grantedgrantedCritical
Publication of KR780001339Y1publicationCriticalpatent/KR780001339Y1/en