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Priority claimed from DE19863633889external-prioritypatent/DE3633889A1/en
Priority claimed from DE8706885Uexternal-prioritypatent/DE8706885U1/en
Application filed by Pfp AnstaltfiledCriticalPfp Anstalt
Priority claimed from EP87113424Aexternal-prioritypatent/EP0263986B1/en
Application grantedgrantedCritical
Publication of ATE79001T1publicationCriticalpatent/ATE79001T1/en