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 Cor Tech Res LtdfiledCriticalCor Tech Res Ltd
Priority to KR7302272ApriorityCriticalpatent/KR780000737B1/en
Application grantedgrantedCritical
Publication of KR780000737B1publicationCriticalpatent/KR780000737B1/en