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Priority claimed from DE19883842439external-prioritypatent/DE3842439A1/de
Priority claimed from DE19883843219external-prioritypatent/DE3843219A1/de
Application filed by Krupp Widia GmbhfiledCriticalKrupp Widia Gmbh
Priority claimed from PCT/DE1989/000740external-prioritypatent/WO1990007017A1/de
Application grantedgrantedCritical
Publication of ATE90399T1publicationCriticalpatent/ATE90399T1/de