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Priority to JP9874589UpriorityCriticalpatent/JPH0740231Y2/ja
Priority to KR1019890012704Aprioritypatent/KR950015068B1/ko
Publication of JPH0336988UpublicationCriticalpatent/JPH0336988U/ja
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Publication of JPH0740231Y2publicationCriticalpatent/JPH0740231Y2/ja