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Priority to JP1975097100UpriorityCriticalpatent/JPS584117Y2/ja
Priority to US05/694,488prioritypatent/US4040193A/en
Publication of JPS5212478UpublicationCriticalpatent/JPS5212478U/ja
Application grantedgrantedCritical
Publication of JPS584117Y2publicationCriticalpatent/JPS584117Y2/ja