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 Telegraph and Telephone Corp
Tohoku Kinzoku Kogyo KK
Original Assignee
Nippon Telegraph and Telephone Corp
Tohoku Kinzoku 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 Nippon Telegraph and Telephone Corp, Tohoku Kinzoku Kogyo KKfiledCriticalNippon Telegraph and Telephone Corp
Priority to JP13585779ApriorityCriticalpatent/JPS5660370A/ja
Publication of JPS5660370ApublicationCriticalpatent/JPS5660370A/ja
Publication of JPS6138826B2publicationCriticalpatent/JPS6138826B2/ja