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.)
Railway Technical Research Institute
Sankosha Co Ltd
Original Assignee
Railway Technical Research Institute
Sankosha Co 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 Railway Technical Research Institute, Sankosha Co LtdfiledCriticalRailway Technical Research Institute
Priority to JP20091782ApriorityCriticalpatent/JPS5992253A/ja
Publication of JPS5992253ApublicationCriticalpatent/JPS5992253A/ja
Publication of JPS6355466B2publicationCriticalpatent/JPS6355466B2/ja