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Priority to JP9180678UpriorityCriticalpatent/JPS559447U/ja
Priority to GB7901310Aprioritypatent/GB2013000A/en
Priority to DE19792901699prioritypatent/DE2901699A1/de
Priority to FR7901198Aprioritypatent/FR2423044A1/fr
Publication of JPS559447UpublicationCriticalpatent/JPS559447U/ja