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Priority to JP7195876UpriorityCriticalpatent/JPS5437517Y2/ja
Priority to DE19772713940prioritypatent/DE2713940A1/de
Publication of JPS52162596UpublicationCriticalpatent/JPS52162596U/ja
Application grantedgrantedCritical
Publication of JPS5437517Y2publicationCriticalpatent/JPS5437517Y2/ja