Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to JP14747879ApriorityCriticalpatent/JPS5671213A/ja
Priority to CA000364370Aprioritypatent/CA1152590A/en
Priority to US06/206,132prioritypatent/US4356346A/en
Priority to IT25964/80Aprioritypatent/IT1149922B/it
Publication of JPS5671213ApublicationCriticalpatent/JPS5671213A/ja
Publication of JPS5651444B2publicationCriticalpatent/JPS5651444B2/ja