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Priority to JP6914872UpriorityCriticalpatent/JPS4927131U/ja
Priority to DE19732329118prioritypatent/DE2329118C3/de
Priority to GB2737173Aprioritypatent/GB1428169A/en
Priority to IT5062373Aprioritypatent/IT985380B/it
Priority to FR7321352Aprioritypatent/FR2188540A5/fr
Publication of JPS4927131UpublicationCriticalpatent/JPS4927131U/ja