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 Artefatos Metalurg Soc PaulistfiledCriticalArtefatos Metalurg Soc Paulist
Priority to BR21897870ApriorityCriticalpatent/BR7018978D0/pt
Publication of BR7018978D0publicationCriticalpatent/BR7018978D0/pt