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Priority to JP1976154509UpriorityCriticalpatent/JPS5429051Y2/ja
Priority to US05/822,515prioritypatent/US4155317A/en
Publication of JPS5374311UpublicationCriticalpatent/JPS5374311U/ja
Application grantedgrantedCritical
Publication of JPS5429051Y2publicationCriticalpatent/JPS5429051Y2/ja