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Priority claimed from DE3502171Aexternal-prioritypatent/DE3502171C1/de
Priority claimed from DE19853517645external-prioritypatent/DE3517645A1/de
Application filed by Marx Bergbau Gmbh & Co KgfiledCriticalMarx Bergbau Gmbh & Co Kg
Application grantedgrantedCritical
Publication of ATE67754T1publicationCriticalpatent/ATE67754T1/de