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Priority to JP1654674ApriorityCriticalpatent/JPS547246B2/ja
Priority to AU77150/75Aprioritypatent/AU486182B2/en
Priority to GB179475Aprioritypatent/GB1463212A/en
Publication of JPS50110916ApublicationCriticalpatent/JPS50110916A/ja
Publication of JPS547246B2publicationCriticalpatent/JPS547246B2/ja