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 JP12110577ApriorityCriticalpatent/JPS5454554A/ja
Priority to DE2840980Aprioritypatent/DE2840980C3/de
Priority to US05/944,592prioritypatent/US4220991A/en
Publication of JPS5454554ApublicationCriticalpatent/JPS5454554A/ja
Publication of JPS5738932B2publicationCriticalpatent/JPS5738932B2/ja