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Priority to JP1988044794UpriorityCriticalpatent/JPH0729252Y2/ja
Priority to KR2019890002784Uprioritypatent/KR950007144Y1/ko
Priority to US07/323,783prioritypatent/US5022372A/en
Publication of JPH01148063UpublicationCriticalpatent/JPH01148063U/ja
Application grantedgrantedCritical
Publication of JPH0729252Y2publicationCriticalpatent/JPH0729252Y2/ja