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
Priority claimed from JP52015816Aexternal-prioritypatent/JPS5820313B2/en
Priority claimed from JP11441077Aexternal-prioritypatent/JPS591092B2/en
Application filed by Kobe Steel LtdfiledCriticalKobe Steel Ltd
Publication of MX149596ApublicationCriticalpatent/MX149596A/en