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Priority to JP1988119985UpriorityCriticalpatent/JPH0239689U/ja
Priority to EP89309234Aprioritypatent/EP0359515B1/en
Priority to DE68911244Tprioritypatent/DE68911244T2/de
Priority to KR1019890013303Aprioritypatent/KR950005901B1/ko
Publication of JPH0239689UpublicationCriticalpatent/JPH0239689U/ja
Priority to US07/537,148prioritypatent/US5016362A/en