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Priority claimed from DE19843427497external-prioritypatent/DE3427497A1/de
Priority claimed from DE19853513907external-prioritypatent/DE3513907A1/de
Application filed by Ruhrtal GmbhfiledCriticalRuhrtal Gmbh
Priority claimed from EP85105681Aexternal-prioritypatent/EP0162376B1/de
Application grantedgrantedCritical
Publication of ATE60162T1publicationCriticalpatent/ATE60162T1/de