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Priority to JP6092476UpriorityCriticalpatent/JPS5730686Y2/ja
Priority to US05/797,255prioritypatent/US4165871A/en
Publication of JPS52152627UpublicationCriticalpatent/JPS52152627U/ja
Application grantedgrantedCritical
Publication of JPS5730686Y2publicationCriticalpatent/JPS5730686Y2/ja