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Priority to JP1978003263UpriorityCriticalpatent/JPS562877Y2/ja
Priority to US05/969,332prioritypatent/US4231379A/en
Publication of JPS54107582UpublicationCriticalpatent/JPS54107582U/ja
Application grantedgrantedCritical
Publication of JPS562877Y2publicationCriticalpatent/JPS562877Y2/ja