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Priority to JP1981115051UpriorityCriticalpatent/JPS5819830U/ja
Priority to KR2019820006059Uprioritypatent/KR850002395Y1/ko
Publication of JPS5819830UpublicationCriticalpatent/JPS5819830U/ja
Application grantedgrantedCritical
Publication of JPS6211221Y2publicationCriticalpatent/JPS6211221Y2/ja