Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thyssen Still Otto Gmbh, Krupp Koppers GmbhfiledCriticalThyssen Still Otto Gmbh
Priority claimed from PCT/EP1990/000838external-prioritypatent/WO1990014408A1/de
Application grantedgrantedCritical
Publication of ATE99731T1publicationCriticalpatent/ATE99731T1/de