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Priority to JP1987145028UpriorityCriticalpatent/JPH0525221Y2/ja
Priority to KR1019880012198Aprioritypatent/KR910008075B1/ko
Publication of JPS6450419UpublicationCriticalpatent/JPS6450419U/ja
Application grantedgrantedCritical
Publication of JPH0525221Y2publicationCriticalpatent/JPH0525221Y2/ja
