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Priority to JP1988114008UpriorityCriticalpatent/JPH0237263U/ja
Priority to US07/390,893prioritypatent/US4951874A/en
Priority to DE3929134Aprioritypatent/DE3929134A1/de
Priority to KR1019890012629Aprioritypatent/KR930001789B1/ko
Publication of JPH0237263UpublicationCriticalpatent/JPH0237263U/ja
