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Priority to JP1977105388UpriorityCriticalpatent/JPS5733924Y2/ja
Priority to GB7832346Aprioritypatent/GB2004477B/en
Priority to US05/931,442prioritypatent/US4214845A/en
Publication of JPS5431293UpublicationCriticalpatent/JPS5431293U/ja
Application grantedgrantedCritical
Publication of JPS5733924Y2publicationCriticalpatent/JPS5733924Y2/ja