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Priority to JP6346675UpriorityCriticalpatent/JPS5533290Y2/ja
Priority to US05/682,400prioritypatent/US4032790A/en
Priority to DE2620883Aprioritypatent/DE2620883B2/de
Publication of JPS51142873UpublicationCriticalpatent/JPS51142873U/ja
Application grantedgrantedCritical
Publication of JPS5533290Y2publicationCriticalpatent/JPS5533290Y2/ja