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Priority to JP1186972UpriorityCriticalpatent/JPS4888579U/ja
Priority to DE19722223759prioritypatent/DE2223759A1/de
Priority to IT517072Aprioritypatent/IT960065B/it
Priority to FR7227463Aprioritypatent/FR2169022A1/fr
Publication of JPS4888579UpublicationCriticalpatent/JPS4888579U/ja