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Priority to JP1980116008UpriorityCriticalpatent/JPS5912056Y2/ja
Priority to GB8038704Aprioritypatent/GB2075323B/en
Priority to US06/215,584prioritypatent/US4382348A/en
Priority to EP81301002Aprioritypatent/EP0036723A1/en
Publication of JPS5743058UpublicationCriticalpatent/JPS5743058U/ja
Application grantedgrantedCritical
Publication of JPS5912056Y2publicationCriticalpatent/JPS5912056Y2/ja