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.)
Japan National Railways
Nippon Kokuyu Tetsudo
Original Assignee
Japan National Railways
Nippon Kokuyu Tetsudo
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 Japan National Railways, Nippon Kokuyu TetsudofiledCriticalJapan National Railways
Priority to JP163281ApriorityCriticalpatent/JPS57115784A/ja
Publication of JPS57115784ApublicationCriticalpatent/JPS57115784A/ja
Publication of JPS635968B2publicationCriticalpatent/JPS635968B2/ja