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Priority to JP4259673ApriorityCriticalpatent/JPS49130234A/ja
Priority to GB1615674Aprioritypatent/GB1471781A/en
Priority to FR7412720Aprioritypatent/FR2225218B1/fr
Priority to DE19742418276prioritypatent/DE2418276C3/de
Publication of JPS49130234ApublicationCriticalpatent/JPS49130234A/ja