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Priority claimed from GB888830119Aexternal-prioritypatent/GB8830119D0/en
Priority claimed from DE3914025Aexternal-prioritypatent/DE3914025A1/de
Application filed by Braas GmbhfiledCriticalBraas Gmbh
Priority claimed from EP19890123911external-prioritypatent/EP0374972B1/de
Application grantedgrantedCritical
Publication of ATE94249T1publicationCriticalpatent/ATE94249T1/de