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Priority to JP4435873UpriorityCriticalpatent/JPS49145545U/ja
Priority to IT5056373Aprioritypatent/IT986144B/it
Priority to FR7321057Aprioritypatent/FR2214956B1/fr
Priority to DE19732329330prioritypatent/DE2329330C3/de
Publication of JPS49145545UpublicationCriticalpatent/JPS49145545U/ja