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Priority to JP2400374ApriorityCriticalpatent/JPS50118331A/ja
Priority to GB695775Aprioritypatent/GB1461735A/en
Priority to AU78579/75Aprioritypatent/AU477242B2/en
Priority to IT4837075Aprioritypatent/IT1029882B/it
Publication of JPS50118331ApublicationCriticalpatent/JPS50118331A/ja