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Priority to JP7218772ApriorityCriticalpatent/JPS5518886B2/ja
Priority to US00374836Aprioritypatent/US3820131A/en
Priority to DE19732334589prioritypatent/DE2334589A1/de
Publication of JPS4930032ApublicationCriticalpatent/JPS4930032A/ja
Publication of JPS5518886B2publicationCriticalpatent/JPS5518886B2/ja