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 JP59194255Aexternal-prioritypatent/JPS6173819A/en
Application filed by Itoh Iron & Steel Works Co LtdfiledCriticalItoh Iron & Steel Works Co Ltd
Priority to ZA861718ApriorityCriticalpatent/ZA861718B/en
Publication of ZA861718BpublicationCriticalpatent/ZA861718B/en