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Priority to JP1989053980UpriorityCriticalpatent/JPH0638244Y2/ja
Priority to KR2019890018510Uprioritypatent/KR920004981Y1/ko
Publication of JPH02147723UpublicationCriticalpatent/JPH02147723U/ja
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Publication of JPH0638244Y2publicationCriticalpatent/JPH0638244Y2/ja