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 Nippon Kokan KkfiledCriticalNippon Kokan Kk
Priority to IE258789ApriorityCriticalpatent/IE892587L/en
Publication of IE892587LpublicationCriticalpatent/IE892587L/en