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Priority to JP1977023675UpriorityCriticalpatent/JPS5728291Y2/ja
Publication of JPS53118611UpublicationCriticalpatent/JPS53118611U/ja
Priority to US06/018,911prioritypatent/US4259699A/en
Application grantedgrantedCritical
Publication of JPS5728291Y2publicationCriticalpatent/JPS5728291Y2/ja