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 Norio HiraifiledCriticalNorio Hirai
Priority to BR6902674UpriorityCriticalpatent/BR6902674U/en
Publication of BR6902674UpublicationCriticalpatent/BR6902674U/en