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Priority to JP1988058816UpriorityCriticalpatent/JPH01162029U/ja
Priority to KR2019880018909Uprioritypatent/KR910009191Y1/ko
Priority to KR2019890015455Uprioritypatent/KR910009171Y1/ko
Publication of JPH01162029UpublicationCriticalpatent/JPH01162029U/ja