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Priority to JP7842790UpriorityCriticalpatent/JPH0435989U/ja
Priority to PCT/JP1990/001339prioritypatent/WO1991005944A1/ja
Priority to EP90915196Aprioritypatent/EP0448728B1/en
Publication of JPH0435989UpublicationCriticalpatent/JPH0435989U/ja