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 Inst Tcherna MetalurgiafiledCriticalInst Tcherna Metalurgia
Priority to FI874977ApriorityCriticalpatent/FI874977A/en
Publication of FI874977A0publicationCriticalpatent/FI874977A0/en
Publication of FI874977ApublicationCriticalpatent/FI874977A/en