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Priority to JP13375389UpriorityCriticalpatent/JPH0752106Y2/ja
Priority to KR1019900018629Aprioritypatent/KR0158445B1/ko
Priority to CN90109305Aprioritypatent/CN1019185B/zh
Publication of JPH0373526UpublicationCriticalpatent/JPH0373526U/ja
Application grantedgrantedCritical
Publication of JPH0752106Y2publicationCriticalpatent/JPH0752106Y2/ja