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Priority to JP12099087UpriorityCriticalpatent/JPS6425901U/ja
Priority to US07/215,769prioritypatent/US4917441A/en
Priority to EP88111150Aprioritypatent/EP0300333B1/en
Priority to DE8888111150Tprioritypatent/DE3880751T2/de
Publication of JPS6425901UpublicationCriticalpatent/JPS6425901U/ja