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Priority to JP1989098767UpriorityCriticalpatent/JPH0337077U/ja
Priority to US07/570,601prioritypatent/US5152358A/en
Priority to EP90116175Aprioritypatent/EP0414245B1/en
Priority to DE69017119Tprioritypatent/DE69017119T2/de
Priority to KR1019900013116Aprioritypatent/KR940009852B1/ko
Publication of JPH0337077UpublicationCriticalpatent/JPH0337077U/ja