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Priority to JP9372072UpriorityCriticalpatent/JPS5543378Y2/ja
Priority to GB3643873Aprioritypatent/GB1445195A/en
Priority to DE19732340612prioritypatent/DE2340612C3/de
Publication of JPS4952535UpublicationCriticalpatent/JPS4952535U/ja
Application grantedgrantedCritical
Publication of JPS5543378Y2publicationCriticalpatent/JPS5543378Y2/ja