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Priority claimed from DE2920936Aexternal-prioritypatent/DE2920936C2/de
Priority claimed from DE19792920935external-prioritypatent/DE2920935C2/de
Application filed by Heinz SchiepefiledCriticalHeinz Schiepe
Priority claimed from EP19800730035external-prioritypatent/EP0020287B1/de
Application grantedgrantedCritical
Publication of ATE2735T1publicationCriticalpatent/ATE2735T1/de