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Priority to JP12353872ApriorityCriticalpatent/JPS5032400B2/ja
Priority to US417929Aprioritypatent/US3921019A/en
Priority to FR7343047Aprioritypatent/FR2209272B1/fr
Publication of JPS4980495ApublicationCriticalpatent/JPS4980495A/ja
Publication of JPS5032400B2publicationCriticalpatent/JPS5032400B2/ja