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Priority to JP8166869ApriorityCriticalpatent/JPS5018949B1/ja
Priority to US872305Aprioritypatent/US3698652A/en
Priority to DE1967064Aprioritypatent/DE1967064C2/de
Priority to DE1955246Aprioritypatent/DE1955246C3/de
Priority to GB1296680Dprioritypatent/GB1296680A/en
Publication of JPS5018949B1publicationCriticalpatent/JPS5018949B1/ja