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Priority to JP12897082UpriorityCriticalpatent/JPS5931911U/ja
Priority to GB08322839Aprioritypatent/GB2126646B/en
Publication of JPS5931911UpublicationCriticalpatent/JPS5931911U/ja
Application grantedgrantedCritical
Publication of JPS6227147Y2publicationCriticalpatent/JPS6227147Y2/ja