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Priority claimed from DE19873736972external-prioritypatent/DE3736972A1/de
Priority claimed from DE19883802251external-prioritypatent/DE3802251A1/de
Application filed by Renfert GmbhfiledCriticalRenfert Gmbh
Priority claimed from EP88117623Aexternal-prioritypatent/EP0314022B1/de
Application grantedgrantedCritical
Publication of ATE91868T1publicationCriticalpatent/ATE91868T1/de