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Priority to JP17180987UpriorityCriticalpatent/JPH0531863Y2/ja
Priority to KR1019880004189Aprioritypatent/KR900007848B1/ko
Publication of JPH0174724UpublicationCriticalpatent/JPH0174724U/ja
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Publication of JPH0531863Y2publicationCriticalpatent/JPH0531863Y2/ja