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Priority to JP8874571UpriorityCriticalpatent/JPS5132422Y2/ja
Priority to US292673Aprioritypatent/US3870248A/en
Priority to DE19722248026prioritypatent/DE2248026B2/de
Publication of JPS4845610UpublicationCriticalpatent/JPS4845610U/ja
Application grantedgrantedCritical
Publication of JPS5132422Y2publicationCriticalpatent/JPS5132422Y2/ja