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Priority to JP10466582UpriorityCriticalpatent/JPS598748U/ja
Priority to GB08311836Aprioritypatent/GB2123323B/en
Publication of JPS598748UpublicationCriticalpatent/JPS598748U/ja
Application grantedgrantedCritical
Publication of JPS632279Y2publicationCriticalpatent/JPS632279Y2/ja