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Priority to JP1979163847UpriorityCriticalpatent/JPS6245282Y2/ja
Priority to US06/146,250prioritypatent/US4359769A/en
Publication of JPS5682783UpublicationCriticalpatent/JPS5682783U/ja
Application grantedgrantedCritical
Publication of JPS6245282Y2publicationCriticalpatent/JPS6245282Y2/ja