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Priority claimed from DE3302477Aexternal-prioritypatent/DE3302477C2/de
Priority claimed from DE19833331340external-prioritypatent/DE3331340A1/de
Application filed by Buderus AgfiledCriticalBuderus Ag
Priority claimed from EP83112089Aexternal-prioritypatent/EP0114980B1/de
Application grantedgrantedCritical
Publication of ATE22611T1publicationCriticalpatent/ATE22611T1/de