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Priority to JP1976049109UpriorityCriticalpatent/JPS5819537Y2/ja
Priority to US05/788,658prioritypatent/US4127326A/en
Priority to DE2717118Aprioritypatent/DE2717118C2/de
Publication of JPS52141334UpublicationCriticalpatent/JPS52141334U/ja
Application grantedgrantedCritical
Publication of JPS5819537Y2publicationCriticalpatent/JPS5819537Y2/ja