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Priority claimed from DE19863639697external-prioritypatent/DE3639697A1/de
Priority claimed from DE8711664Uexternal-prioritypatent/DE8711664U1/de
Application filed by Gerhard GrundfiledCriticalGerhard Grund
Priority claimed from EP87116648Aexternal-prioritypatent/EP0268197B1/de
Application grantedgrantedCritical
Publication of ATE62310T1publicationCriticalpatent/ATE62310T1/de