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Priority to JP1976032505UpriorityCriticalpatent/JPS5551084Y2/ja
Priority to DE2709579Aprioritypatent/DE2709579C2/de
Priority to US05/775,406prioritypatent/US4164710A/en
Publication of JPS52122616UpublicationCriticalpatent/JPS52122616U/ja
Application grantedgrantedCritical
Publication of JPS5551084Y2publicationCriticalpatent/JPS5551084Y2/ja