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Priority to JP2663274ApriorityCriticalpatent/JPS5719478B2/ja
Priority to DE19752510110prioritypatent/DE2510110A1/de
Publication of JPS50120519ApublicationCriticalpatent/JPS50120519A/ja
Publication of JPS5719478B2publicationCriticalpatent/JPS5719478B2/ja