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Priority to JP5525478UpriorityCriticalpatent/JPS58132Y2/ja
Priority to DE2916753Aprioritypatent/DE2916753C3/de
Priority to US06/033,170prioritypatent/US4222843A/en
Publication of JPS54158693UpublicationCriticalpatent/JPS54158693U/ja
Application grantedgrantedCritical
Publication of JPS58132Y2publicationCriticalpatent/JPS58132Y2/ja