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Priority to JP10927588UpriorityCriticalpatent/JPH0344358Y2/ja
Priority to IT8868006Aprioritypatent/IT1234227B/it
Priority to KR1019880015044Aprioritypatent/KR930009936B1/ko
Publication of JPH0232340UpublicationCriticalpatent/JPH0232340U/ja
Application grantedgrantedCritical
Publication of JPH0344358Y2publicationCriticalpatent/JPH0344358Y2/ja