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Priority to JP1976011646UpriorityCriticalpatent/JPS5434443Y2/ja
Priority to US05/691,829prioritypatent/US4057937A/en
Priority to GB22610/76Aprioritypatent/GB1511755A/en
Publication of JPS52105843UpublicationCriticalpatent/JPS52105843U/ja
Application grantedgrantedCritical
Publication of JPS5434443Y2publicationCriticalpatent/JPS5434443Y2/ja