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Priority to JP50023682ApriorityCriticalpatent/JPS5198063A/ja
Priority to GB7154/76Aprioritypatent/GB1539788A/en
Priority to DE2607867Aprioritypatent/DE2607867C3/de
Priority to FR7605374Aprioritypatent/FR2302558A1/fr
Publication of JPS5198063ApublicationCriticalpatent/JPS5198063A/ja