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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Sumitomo Rubber Industries Ltd
Japan National Railways
Sumitomo Electric Industries Ltd
Nippon Kokuyu Tetsudo
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Sumitomo Rubber Industries Ltd
Japan National Railways
Sumitomo Electric Industries Ltd
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 JAPANESE NATIONAL RAILWAYS<JNR>, Sumitomo Rubber Industries Ltd, Japan National Railways, Sumitomo Electric Industries Ltd, Nippon Kokuyu TetsudofiledCriticalJAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP5493275ApriorityCriticalpatent/JPS51131012A/ja
Publication of JPS51131012ApublicationCriticalpatent/JPS51131012A/ja
Publication of JPS567362B2publicationCriticalpatent/JPS567362B2/ja