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Priority to JP1815074ApriorityCriticalpatent/JPS5647527B2/ja
Priority to US05/497,352prioritypatent/US3943578A/en
Publication of JPS50114237ApublicationCriticalpatent/JPS50114237A/ja
Publication of JPS5647527B2publicationCriticalpatent/JPS5647527B2/ja