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.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable 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 Cable LtdfiledCriticalHitachi Cable Ltd
Priority to JP55070514ApriorityCriticalpatent/JPS5949086B2/ja
Publication of JPS56168909ApublicationCriticalpatent/JPS56168909A/ja
Publication of JPS5949086B2publicationCriticalpatent/JPS5949086B2/ja
Production of cylindrical material with wall-thick part on inner or both outer and inner surfaces from cylindrical material with wall-thick part on the outer surface