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Priority to JP1978091369UpriorityCriticalpatent/JPS634222Y2/ja
Priority to PH22741Aprioritypatent/PH20822A/en
Publication of JPS558927UpublicationCriticalpatent/JPS558927U/ja
Application grantedgrantedCritical
Publication of JPS634222Y2publicationCriticalpatent/JPS634222Y2/ja