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 JP834476ApriorityCriticalpatent/JPS5292533A/ja
Priority to US05/763,082prioritypatent/US4139266A/en
Priority to DE2703823Aprioritypatent/DE2703823C3/de
Publication of JPS5292533ApublicationCriticalpatent/JPS5292533A/ja
Publication of JPS5752566B2publicationCriticalpatent/JPS5752566B2/ja