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Priority to JP1978127761UpriorityCriticalpatent/JPS5723404Y2/ja
Priority to US06/056,248prioritypatent/US4249658A/en
Publication of JPS5541198UpublicationCriticalpatent/JPS5541198U/ja
Application grantedgrantedCritical
Publication of JPS5723404Y2publicationCriticalpatent/JPS5723404Y2/ja