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Priority to JP1976096107UpriorityCriticalpatent/JPS5630831Y2/ja
Priority to US05/816,773prioritypatent/US4113379A/en
Publication of JPS5315339UpublicationCriticalpatent/JPS5315339U/ja
Application grantedgrantedCritical
Publication of JPS5630831Y2publicationCriticalpatent/JPS5630831Y2/ja