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Priority to JP1987140477UpriorityCriticalpatent/JPH0448772Y2/ja
Priority to US07/214,012prioritypatent/US4830216A/en
Priority to KR1019880008351Aprioritypatent/KR910007516B1/ko
Priority to EP88110889Aprioritypatent/EP0298485B1/en
Priority to DE8888110889Tprioritypatent/DE3871627T2/de
Priority to ES198888110889Tprioritypatent/ES2032903T3/es
Publication of JPS6443836UpublicationCriticalpatent/JPS6443836U/ja
Application grantedgrantedCritical
Publication of JPH0448772Y2publicationCriticalpatent/JPH0448772Y2/ja