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Priority to JP3978087UpriorityCriticalpatent/JPS63146924U/ja
Priority to US07/166,089prioritypatent/US4883929A/en
Priority to DE88302279Tprioritypatent/DE3881244T2/de
Priority to EP88302279Aprioritypatent/EP0283258B1/en
Publication of JPS63146924UpublicationCriticalpatent/JPS63146924U/ja