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Priority to JP9194074UpriorityCriticalpatent/JPS537149Y2/ja
Priority to DE19742461309prioritypatent/DE2461309A1/de
Priority to GB5594274Aprioritypatent/GB1487778A/en
Publication of JPS5121016UpublicationCriticalpatent/JPS5121016U/ja
Application grantedgrantedCritical
Publication of JPS537149Y2publicationCriticalpatent/JPS537149Y2/ja