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Priority to JP4615774ApriorityCriticalpatent/JPS5827472B2/ja
Priority to GB1638275Aprioritypatent/GB1486714A/en
Publication of JPS50138870ApublicationCriticalpatent/JPS50138870A/ja
Publication of JPS5827472B2publicationCriticalpatent/JPS5827472B2/ja