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Priority to JP1971022564UpriorityCriticalpatent/JPS5524576Y2/ja
Priority to DE19722215716prioritypatent/DE2215716C3/de
Publication of JPS4718532UpublicationCriticalpatent/JPS4718532U/ja
Application grantedgrantedCritical
Publication of JPS5524576Y2publicationCriticalpatent/JPS5524576Y2/ja