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.)
Daido Steel Co Ltd
Denka Co Ltd
Daidoseiko KK
Original Assignee
Daido Steel Co Ltd
Denki Kagaku Kogyo KK
Daidoseiko 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
Priority claimed from JP7848375Uexternal-prioritypatent/JPS51157512U/ja
Priority claimed from JP1975078485Uexternal-prioritypatent/JPS5433972Y2/ja
Priority claimed from JP50071269Aexternal-prioritypatent/JPS51145499A/ja
Priority claimed from JP50071270Aexternal-prioritypatent/JPS51145500A/ja
Application filed by Daido Steel Co Ltd, Denki Kagaku Kogyo KK, Daidoseiko KKfiledCriticalDaido Steel Co Ltd
Publication of ES448745A1publicationCriticalpatent/ES448745A1/es