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Priority claimed from DE19873721003external-prioritypatent/DE3721003C1/de
Priority claimed from DE3811826Aexternal-prioritypatent/DE3811826A1/de
Application filed by Solvay Werke GmbhfiledCriticalSolvay Werke Gmbh
Application grantedgrantedCritical
Publication of ATE86961T1publicationCriticalpatent/ATE86961T1/de