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Priority to JP11615371UpriorityCriticalpatent/JPS5132446Y2/ja
Priority to DE19722257680prioritypatent/DE2257680A1/de
Publication of JPS4871829UpublicationCriticalpatent/JPS4871829U/ja
Application grantedgrantedCritical
Publication of JPS5132446Y2publicationCriticalpatent/JPS5132446Y2/ja