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Priority to JP1987032453UpriorityCriticalpatent/JPH0752512Y2/ja
Priority to KR1019880001239Aprioritypatent/KR920011085B1/ko
Priority to US07/163,847prioritypatent/US4841738A/en
Publication of JPS63139437UpublicationCriticalpatent/JPS63139437U/ja
Application grantedgrantedCritical
Publication of JPH0752512Y2publicationCriticalpatent/JPH0752512Y2/ja