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Priority to JP1987168895UpriorityCriticalpatent/JPH0632117Y2/ja
Priority to KR1019880014236Aprioritypatent/KR890007762A/ko
Publication of JPH0172251UpublicationCriticalpatent/JPH0172251U/ja
Priority to KR2019910002384Uprioritypatent/KR910005288Y1/ko
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Publication of JPH0632117Y2publicationCriticalpatent/JPH0632117Y2/ja