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Priority to JP19329586UpriorityCriticalpatent/JPS6397805U/ja
Priority to US07/130,821prioritypatent/US4839591A/en
Priority to EP87118581Aprioritypatent/EP0271878B1/en
Priority to DE3789366Tprioritypatent/DE3789366T2/de
Publication of JPS6397805UpublicationCriticalpatent/JPS6397805U/ja