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 JP13004175ApriorityCriticalpatent/JPS5254473A/ja
Priority to US05/708,251prioritypatent/US4086815A/en
Priority to CA257,621Aprioritypatent/CA1057969A/en
Publication of JPS5254473ApublicationCriticalpatent/JPS5254473A/ja
Publication of JPS5618104B2publicationCriticalpatent/JPS5618104B2/ja