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Priority claimed from DE19893900133external-prioritypatent/DE3900133A1/de
Priority claimed from DE8900674Uexternal-prioritypatent/DE8900674U1/de
Application filed by Karl Sion, Dieter WirtzfiledCriticalKarl Sion
Priority claimed from EP89907666Aexternal-prioritypatent/EP0425530B1/de
Application grantedgrantedCritical
Publication of ATE81174T1publicationCriticalpatent/ATE81174T1/de