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 Constr Metalurgicas LtdfiledCriticalConstr Metalurgicas Ltd
Priority to BR7500412DpriorityCriticalpatent/BR7500309A/pt
Publication of BR7500309ApublicationCriticalpatent/BR7500309A/pt