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Priority claimed from DE19803009556external-prioritypatent/DE3009556C2/de
Priority claimed from DE19813100505external-prioritypatent/DE3100505A1/de
Application filed by Fritz RoberingfiledCriticalFritz Robering
Priority claimed from EP81101848Aexternal-prioritypatent/EP0036189B2/de
Application grantedgrantedCritical
Publication of ATE3322T1publicationCriticalpatent/ATE3322T1/de