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Priority claimed from DE19813120703external-prioritypatent/DE3120703A1/de
Application filed by Rainer BaehrfiledCriticalRainer Baehr
Priority claimed from EP81108941Aexternal-prioritypatent/EP0051789B1/de
Application grantedgrantedCritical
Publication of ATE21820T1publicationCriticalpatent/ATE21820T1/de