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Priority to JP47062053ApriorityCriticalpatent/JPS5242059B2/ja
Priority to US371997Aprioritypatent/US3861263A/en
Publication of JPS4923620ApublicationCriticalpatent/JPS4923620A/ja
Publication of JPS5242059B2publicationCriticalpatent/JPS5242059B2/ja
