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.)
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Railway Technical Research Institute
Original Assignee
Railway Technical Research Institute
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Publication date
Application filed by Railway Technical Research InstitutefiledCriticalRailway Technical Research Institute
Priority to JP12465083UpriorityCriticalpatent/JPS6032156U/ja
Publication of JPS6032156UpublicationCriticalpatent/JPS6032156U/ja
Application grantedgrantedCritical
Publication of JPS643723Y2publicationCriticalpatent/JPS643723Y2/ja