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Priority to JP11637787UpriorityCriticalpatent/JPS6421771U/ja
Priority to KR870011987Aprioritypatent/KR880004859A/ko
Publication of JPS6421771UpublicationCriticalpatent/JPS6421771U/ja
Priority to KR2019950003842Uprioritypatent/KR960033147U/ko
