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Priority to JP1986123513UpriorityCriticalpatent/JPH0540992Y2/ja
Priority to DE8787111596Tprioritypatent/DE3778607D1/de
Priority to EP87111596Aprioritypatent/EP0256490B1/en
Priority to US07/083,812prioritypatent/US4781562A/en
Priority to KR1019870008851Aprioritypatent/KR900007330B1/ko
Publication of JPS6330128UpublicationCriticalpatent/JPS6330128U/ja
Application grantedgrantedCritical
Publication of JPH0540992Y2publicationCriticalpatent/JPH0540992Y2/ja