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Priority to JP1987035326UpriorityCriticalpatent/JPS63143040U/ja
Priority to KR2019880001531Uprioritypatent/KR910001058Y1/ko
Priority to US07/166,513prioritypatent/US4868442A/en
Publication of JPS63143040UpublicationCriticalpatent/JPS63143040U/ja