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Priority to JP4166972ApriorityCriticalpatent/JPS491926A/ja
Priority to US344618Aprioritypatent/US3898794A/en
Priority to GB1475473Aprioritypatent/GB1417614A/en
Priority to FR7311817Aprioritypatent/FR2179019B1/fr
Publication of JPS491926ApublicationCriticalpatent/JPS491926A/ja