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.)
JFE Pipe Fitting Mfg Co Ltd
Nippon Kokan Keishiyu KK
Original Assignee
Nippon Kokan Pipe Fitting Mfg Co Ltd
Nippon Kokan Keishiyu 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 Nippon Kokan Pipe Fitting Mfg Co Ltd, Nippon Kokan Keishiyu KKfiledCriticalNippon Kokan Pipe Fitting Mfg Co Ltd
Priority to JP12092975ApriorityCriticalpatent/JPS5244416A/ja
Publication of JPS5244416ApublicationCriticalpatent/JPS5244416A/ja
Publication of JPS5530152B2publicationCriticalpatent/JPS5530152B2/ja