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Priority to JP10679888UpriorityCriticalpatent/JPH0637261Y2/ja
Priority to US07/387,491prioritypatent/US4964658A/en
Priority to KR1019890010777Aprioritypatent/KR920005028B1/ko
Publication of JPH0229393UpublicationCriticalpatent/JPH0229393U/ja
Priority to US07/561,731prioritypatent/US5090748A/en
Application grantedgrantedCritical
Publication of JPH0637261Y2publicationCriticalpatent/JPH0637261Y2/ja