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Priority to JP1978159443UpriorityCriticalpatent/JPS5716907Y2/ja
Priority to DE7979901540Tprioritypatent/DE2965956D1/de
Priority to PCT/JP1979/000292prioritypatent/WO1980001087A1/ja
Publication of JPS5576239UpublicationCriticalpatent/JPS5576239U/ja
Priority to EP19790901540prioritypatent/EP0020779B1/en
Application grantedgrantedCritical
Publication of JPS5716907Y2publicationCriticalpatent/JPS5716907Y2/ja