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Priority to JP14248279UpriorityCriticalpatent/JPS5659686U/ja
Priority to GB8032375Aprioritypatent/GB2062304B/en
Priority to DE3038613Aprioritypatent/DE3038613C2/de
Priority to CH771880Aprioritypatent/CH648181GA3/de
Publication of JPS5659686UpublicationCriticalpatent/JPS5659686U/ja