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Priority to JP1972031232UpriorityCriticalpatent/JPS5353430Y2/ja
Priority to CA166,938Aprioritypatent/CA997025A/en
Priority to US341195Aprioritypatent/US3921129A/en
Publication of JPS48105483UpublicationCriticalpatent/JPS48105483U/ja
Application grantedgrantedCritical
Publication of JPS5353430Y2publicationCriticalpatent/JPS5353430Y2/ja