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Priority to JP7491388UpriorityCriticalpatent/JPH01178011U/ja
Priority to EP19890906465prioritypatent/EP0378692A4/en
Priority to PCT/JP1989/000571prioritypatent/WO1989011831A1/ja
Priority to CA000606169Aprioritypatent/CA1326800C/en
Publication of JPH01178011UpublicationCriticalpatent/JPH01178011U/ja