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Priority to JP1976094118UpriorityCriticalpatent/JPS5612734Y2/ja
Priority to US05/816,219prioritypatent/US4144413A/en
Publication of JPS5312574UpublicationCriticalpatent/JPS5312574U/ja
Application grantedgrantedCritical
Publication of JPS5612734Y2publicationCriticalpatent/JPS5612734Y2/ja