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Priority claimed from DE19853539783external-prioritypatent/DE3539783C1/de
Application filed by Helmut HirtzfiledCriticalHelmut Hirtz
Priority claimed from EP86906762Aexternal-prioritypatent/EP0272274B1/de
Application grantedgrantedCritical
Publication of ATE51818T1publicationCriticalpatent/ATE51818T1/de