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Priority claimed from DE19818102023external-prioritypatent/DE8102023U1/en
Application filed by Ruhrkohle AgfiledCriticalRuhrkohle Ag
Priority claimed from EP82100088Aexternal-prioritypatent/EP0057347B1/en
Application grantedgrantedCritical
Publication of ATE13778T1publicationCriticalpatent/ATE13778T1/en