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Priority claimed from DE19792935604external-prioritypatent/DE2935604A1/de
Priority claimed from DE19803020121external-prioritypatent/DE3020121A1/de
Application filed by Maschinenfabrik Korfmann Gmbh, Ruhrkohle AktiengesellschaftfiledCriticalMaschinenfabrik Korfmann Gmbh
Priority claimed from EP80104858Aexternal-prioritypatent/EP0025862B1/de
Application grantedgrantedCritical
Publication of ATE4239T1publicationCriticalpatent/ATE4239T1/de