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Priority to JP1972104800UpriorityCriticalpatent/JPS5325579Y2/ja
Priority to US394261Aprioritypatent/US3881144A/en
Priority to DE2345103Aprioritypatent/DE2345103C3/de
Publication of JPS4961615UpublicationCriticalpatent/JPS4961615U/ja
Application grantedgrantedCritical
Publication of JPS5325579Y2publicationCriticalpatent/JPS5325579Y2/ja