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Priority to JP1975092971UpriorityCriticalpatent/JPS5540644Y2/ja
Priority to AU14977/76Aprioritypatent/AU493908B2/en
Priority to GB25439/76Aprioritypatent/GB1544976A/en
Publication of JPS527076UpublicationCriticalpatent/JPS527076U/ja
Application grantedgrantedCritical
Publication of JPS5540644Y2publicationCriticalpatent/JPS5540644Y2/ja