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Priority to JP1987146266UpriorityCriticalpatent/JPH0730247Y2/ja
Priority to DE3807195Aprioritypatent/DE3807195A1/de
Priority to KR2019880007291Uprioritypatent/KR950001371Y1/ko
Publication of JPS6452612UpublicationCriticalpatent/JPS6452612U/ja
Priority to US07/430,928prioritypatent/US5017055A/en
Application grantedgrantedCritical
Publication of JPH0730247Y2publicationCriticalpatent/JPH0730247Y2/ja
