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Priority to JP1979091516UpriorityCriticalpatent/JPS6235947Y2/ja
Priority to GB8000476Aprioritypatent/GB2046370B/en
Priority to NL8000171Aprioritypatent/NL8000171A/nl
Priority to DE19803001061prioritypatent/DE3001061A1/de
Publication of JPS568924UpublicationCriticalpatent/JPS568924U/ja
Application grantedgrantedCritical
Publication of JPS6235947Y2publicationCriticalpatent/JPS6235947Y2/ja