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Priority to JP1972114247UpriorityCriticalpatent/JPS5350421Y2/ja
Priority to DE19732349543prioritypatent/DE2349543C2/de
Publication of JPS4969335UpublicationCriticalpatent/JPS4969335U/ja
Application grantedgrantedCritical
Publication of JPS5350421Y2publicationCriticalpatent/JPS5350421Y2/ja