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Priority to JP2177773ApriorityCriticalpatent/JPS5522408B2/ja
Priority to DE19742408989prioritypatent/DE2408989A1/de
Publication of JPS49110599ApublicationCriticalpatent/JPS49110599A/ja
Publication of JPS5522408B2publicationCriticalpatent/JPS5522408B2/ja