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Priority to JP6117176ApriorityCriticalpatent/JPS52144976A/ja
Priority to DE2712543Aprioritypatent/DE2712543C2/de
Priority to US05/780,327prioritypatent/US4100566A/en
Publication of JPS52144976ApublicationCriticalpatent/JPS52144976A/ja
Publication of JPS5622379B2publicationCriticalpatent/JPS5622379B2/ja