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 Tubarao SiderurgicafiledCriticalTubarao Siderurgica
Priority to BR7603140UpriorityCriticalpatent/BR7603140U/pt
Publication of BR7603140UpublicationCriticalpatent/BR7603140U/pt