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Priority to JP13660785UpriorityCriticalpatent/JPS6242728U/ja
Priority to GB8621166Aprioritypatent/GB2179836B/en
Priority to DE19863630020prioritypatent/DE3630020A1/de
Priority to FR8612385Aprioritypatent/FR2586523A1/fr
Publication of JPS6242728UpublicationCriticalpatent/JPS6242728U/ja