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.)
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
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 Hitachi Metals LtdfiledCriticalHitachi Metals Ltd
Priority to JP1978068704UpriorityCriticalpatent/JPS5821636Y2/ja
Publication of JPS54169987UpublicationCriticalpatent/JPS54169987U/ja
Application grantedgrantedCritical
Publication of JPS5821636Y2publicationCriticalpatent/JPS5821636Y2/ja