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Priority to JP1989145233UpriorityCriticalpatent/JPH083241Y2/ja
Priority to KR90018089Uprioritypatent/KR960004009Y1/ko
Publication of JPH0383022UpublicationCriticalpatent/JPH0383022U/ja
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Publication of JPH083241Y2publicationCriticalpatent/JPH083241Y2/ja