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Priority to JP1989060530UpriorityCriticalpatent/JPH02149917U/ja
Priority to KR2019900004948Uprioritypatent/KR960006160Y1/ko
Priority to US07/527,822prioritypatent/US5144344A/en
Publication of JPH02149917UpublicationCriticalpatent/JPH02149917U/ja