Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Sumitomo Light Metal Industries Ltd
Sanei Kogyo KK
Original Assignee
Sumitomo Light Metal Industries Ltd
Sumitomo Metal Industries Ltd
Sanei Kogyo KK
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 Sumitomo Light Metal Industries Ltd, Sumitomo Metal Industries Ltd, Sanei Kogyo KKfiledCriticalSumitomo Light Metal Industries Ltd
Priority to JP12773974ApriorityCriticalpatent/JPS5333307B2/ja
Publication of JPS5153928ApublicationCriticalpatent/JPS5153928A/ja
Publication of JPS5333307B2publicationCriticalpatent/JPS5333307B2/ja