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Priority to JP1978098241UpriorityCriticalpatent/JPS5843012Y2/ja
Priority to US06/053,714prioritypatent/US4336534A/en
Publication of JPS5516558UpublicationCriticalpatent/JPS5516558U/ja
Application grantedgrantedCritical
Publication of JPS5843012Y2publicationCriticalpatent/JPS5843012Y2/ja