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Priority to JP1990401396UpriorityCriticalpatent/JPH0714695Y2/ja
Priority to ES91311930Tprioritypatent/ES2070449T3/es
Priority to DE1991608884prioritypatent/DE69108884T2/de
Priority to EP19910311930prioritypatent/EP0493954B1/en
Publication of JPH0490764UpublicationCriticalpatent/JPH0490764U/ja
Application grantedgrantedCritical
Publication of JPH0714695Y2publicationCriticalpatent/JPH0714695Y2/ja