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Priority to JP1989060529UpriorityCriticalpatent/JPH02149914U/ja
Priority to KR2019900005012Uprioritypatent/KR970000049Y1/ko
Priority to US07/527,822prioritypatent/US5144344A/en
Publication of JPH02149914UpublicationCriticalpatent/JPH02149914U/ja