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Priority to JP5601389UpriorityCriticalpatent/JPH0711988Y2/ja
Priority to KR1019900001025Aprioritypatent/KR930000181B1/ko
Priority to EP90101926Aprioritypatent/EP0381197B1/en
Priority to DE69013371Tprioritypatent/DE69013371D1/de
Publication of JPH02146041UpublicationCriticalpatent/JPH02146041U/ja
Priority to US07/780,523prioritypatent/US5133616A/en
Application grantedgrantedCritical
Publication of JPH0711988Y2publicationCriticalpatent/JPH0711988Y2/ja