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Priority to JP49054181ApriorityCriticalpatent/JPS5746070B2/ja
Priority to DE2441042Aprioritypatent/DE2441042A1/de
Publication of JPS50147345ApublicationCriticalpatent/JPS50147345A/ja
Publication of JPS5746070B2publicationCriticalpatent/JPS5746070B2/ja