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Priority to KR2019950050037UpriorityCriticalpatent/KR970044133U/en
Priority to JP33071896Aprioritypatent/JPH09189423A/en
Priority to GB9625960Aprioritypatent/GB2308156B/en
Priority to US08/766,261prioritypatent/US5857720A/en
Publication of KR970044133UpublicationCriticalpatent/KR970044133U/en