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Priority to JP1978112186UpriorityCriticalpatent/JPS5835560Y2/ja
Priority to US06/037,151prioritypatent/US4268068A/en
Publication of JPS5530120UpublicationCriticalpatent/JPS5530120U/ja
Application grantedgrantedCritical
Publication of JPS5835560Y2publicationCriticalpatent/JPS5835560Y2/ja