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Priority to JP40577190UpriorityCriticalpatent/JPH0491810U/ja
Priority to EP19920901941prioritypatent/EP0517928A4/en
Priority to PCT/JP1991/001763prioritypatent/WO1992012054A1/ja
Publication of JPH0491810UpublicationCriticalpatent/JPH0491810U/ja