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Priority to JP11940469UpriorityCriticalpatent/JPS497589Y1/ja
Priority to GB2659170Aprioritypatent/GB1281505A/en
Priority to FR7021035Aprioritypatent/FR2050514B1/fr
Priority to CH874370Aprioritypatent/CH567295A/xx
Priority to DE19702029713prioritypatent/DE2029713A1/de
Priority to DE19707022647Dprioritypatent/DE7022647U/de
Publication of JPS497589Y1publicationCriticalpatent/JPS497589Y1/ja