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Priority to JP8036975UpriorityCriticalpatent/JPS51159179U/ja
Priority to GB23465/76Aprioritypatent/GB1544270A/en
Priority to US05/694,289prioritypatent/US4048852A/en
Priority to DE19762626057prioritypatent/DE2626057A1/de
Priority to FR7617863Aprioritypatent/FR2314480A1/fr
Publication of JPS51159179UpublicationCriticalpatent/JPS51159179U/ja