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Priority to JP1987057027UpriorityCriticalpatent/JPH0751338Y2/ja
Priority to KR1019880003765Aprioritypatent/KR880012367A/ko
Priority to US07/179,676prioritypatent/US4941791A/en
Publication of JPS63163972UpublicationCriticalpatent/JPS63163972U/ja
Application grantedgrantedCritical
Publication of JPH0751338Y2publicationCriticalpatent/JPH0751338Y2/ja
