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Priority to JP1068872ApriorityCriticalpatent/JPS528617B2/ja
Priority to US00251183Aprioritypatent/US3791697A/en
Priority to GB2206172Aprioritypatent/GB1396996A/en
Publication of JPS4879440ApublicationCriticalpatent/JPS4879440A/ja
Publication of JPS528617B2publicationCriticalpatent/JPS528617B2/ja