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Priority to JP9980373UpriorityCriticalpatent/JPS5044626U/ja
Priority to US05/498,985prioritypatent/US3959706A/en
Priority to DE2440218Aprioritypatent/DE2440218C3/de
Priority to GB37272/74Aprioritypatent/GB1480957A/en
Publication of JPS5044626UpublicationCriticalpatent/JPS5044626U/ja