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Priority to JP16325686UpriorityCriticalpatent/JPS6368277U/ja
Priority to KR1019870011517Dprioritypatent/KR910003142B1/ko
Priority to US07/111,686prioritypatent/US4878047A/en
Priority to KR870011517Aprioritypatent/KR880005792A/ko
Priority to DE8787115354Tprioritypatent/DE3772509D1/de
Priority to EP87115354Aprioritypatent/EP0264918B1/en
Publication of JPS6368277UpublicationCriticalpatent/JPS6368277U/ja