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Priority to JP6111372ApriorityCriticalpatent/JPS5416535B2/ja
Priority to IT50863/73Aprioritypatent/IT985491B/it
Priority to DE19732330955prioritypatent/DE2330955B2/de
Priority to GB2903173Aprioritypatent/GB1432157A/en
Publication of JPS4921420ApublicationCriticalpatent/JPS4921420A/ja
Priority to US05/598,598prioritypatent/US4021259A/en
Publication of JPS5416535B2publicationCriticalpatent/JPS5416535B2/ja