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Application filedfiledCritical
Priority to JP1980083606UpriorityCriticalpatent/JPS5824037Y2/ja
Priority to CA000374801Aprioritypatent/CA1168067A/en
Priority to DE8181301572Tprioritypatent/DE3176802D1/de
Priority to EP81301572Aprioritypatent/EP0040908B1/en
Priority to AT81301572Tprioritypatent/ATE35446T1/de
Publication of JPS576840UpublicationCriticalpatent/JPS576840U/ja
Application grantedgrantedCritical
Publication of JPS5824037Y2publicationCriticalpatent/JPS5824037Y2/ja